Self-hosted invoicing application for freelancers and small businesses with expense tracking

self-hosteddockerweb-based

Alternative to: FreshBooks, Wave Accounting

Explore

Cloud Storage27.5k

AGPL-3.0Free+3

Nextcloud

Self-hosted productivity platform with file sync, sharing, calendar, contacts, and collaboration apps

self-hosteddockercollaborative

Alternative to: Google Drive, Dropbox, OneDrive

Explore

Education19.0k

AGPL-3.0Free+1

Anki

Spaced-repetition flashcard program for efficient memorization of languages, science, and more

cross-platformdesktopmobile-friendly

Alternative to: Duolingo, Kahoot!

Explore

Design & Graphics14.5k

GPL-3.0Free

Blender

Complete 3D creation suite for modeling, animation, rendering, video editing, and visual effects

cross-platformdesktopplugin-system

Alternative to: Adobe After Effects, Adobe Premiere Pro

Explore

Design & Graphics18.3k

GPL-3.0Free

GIMP

Free and open-source raster graphics editor for image manipulation, photo retouching, and digital art

cross-platformplugin-systemdesktop

Alternative to: Adobe Photoshop

Explore

Game Development92.0k

MITFree+2

Godot

Feature-packed game engine for creating 2D and 3D games across multiple platforms

desktopcross-platformextensible

Alternative to: Unity, Unreal Engine, GameMaker

Explore

Databases16.5k

otherFree

PostgreSQL

Advanced open-source relational database with ACID compliance, extensibility, and SQL standards support

self-hostedextensibleenterprise

Alternative to: Oracle Database, Microsoft SQL Server

Explore

Productivity2.6k

MPL-2.0Free

LibreOffice

Comprehensive office suite with word processor, spreadsheet, presentation, and database applications

cross-platformdesktopextensible

Alternative to: Microsoft Office

Explore

Design & Graphics11.0k

GPL-3.0Free

Inkscape

Professional vector graphics editor with SVG format support for illustrations, diagrams, and design

cross-platformdesktopextensible

Alternative to: Adobe Illustrator, CorelDRAW

Explore

Security & Privacy16.0k

GPL-3.0Freemium+2

Bitwarden

Cross-platform password manager with end-to-end encryption and secure vault sharing

self-hostede2e-encryptedcross-platform

Alternative to: LastPass, 1Password

Explore

Cloud Storage12.0k

GPL-3.0Freemium+1

Cryptomator

Client-side encryption tool for cloud files with transparent integration into any cloud storage

e2e-encryptedcross-platformdesktop

Alternative to: Google Drive, Dropbox, OneDrive

Explore

Media & Entertainment6.5k

GPL-3.0Free

AntennaPod

Open-source podcast manager and player for Android with streaming and offline support

mobile-friendlyprivacy-focusedoffline-capable

Alternative to: Spotify

Explore

Game Development8.0k

GPL-3.0Free

Lutris

Gaming platform for Linux that manages game installations from multiple sources and launchers

desktoppython

Alternative to: Steam

Explore

Communication1.2k

GPL-3.0Free

Briar

Decentralized messaging app designed for activists and journalists with offline peer-to-peer support

e2e-encryptedprivacy-focuseddecentralized

Alternative to: WhatsApp, Telegram

Explore

Design & Graphics42.0k

Apache-2.0Free

draw.io

Free diagramming tool for creating flowcharts, network diagrams, UML, and org charts

web-baseddesktopelectron

Alternative to: Figma

Explore

Game Development36.0k

MITFree

Bevy

Data-driven game engine built in Rust with entity component system and modular architecture

rustcross-platformextensible

Alternative to: Unity, Unreal Engine

Explore

Game Development11.0k

LGPL-3.0Free

Minetest

Voxel game engine and sandbox game with extensive modding support and multiplayer

desktopcross-platformextensible

Alternative to: Steam

Explore

DevOps & Infrastructure12.5k

Apache-2.0Free

CoreDNS

Flexible and extensible DNS server written in Go, the default DNS in Kubernetes

golangkubernetesplugin-system

Alternative to: Amazon Web Services

Explore

Design & Graphics

otherFreemium

Photopea

Browser-based image editor supporting PSD, XCF, and Sketch files with advanced layer editing

web-basedcross-platform

Alternative to: Adobe Photoshop

Explore

Media & Entertainment18.5k

GPL-3.0Free+1

Kodi

Home theater media center application for playing videos, music, podcasts, and other media

desktopcross-platformplugin-system

Alternative to: Spotify

Explore

Design & Graphics7.6k

GPL-3.0Free

Krita

Digital painting application designed for illustrators, concept artists, and comic creators

cross-platformdesktopplugin-system

Alternative to: Adobe Photoshop

Explore

Cloud Storage6.5k

GPL-3.0Free

OnionShare

Secure file sharing tool that uses the Tor network for anonymous peer-to-peer transfers

privacy-focuseddesktopcross-platform

Alternative to: Dropbox

Explore

Communication3.7k

GPL-3.0Free+1

Delta Chat

Decentralized chat application that works over email with automatic end-to-end encryption

e2e-encrypteddecentralizedmobile-friendly

Alternative to: WhatsApp, Telegram

Explore

Cloud Storage1.6k

MITFree

xBrowserSync

Browser bookmark syncing tool with end-to-end encryption and anonymous account creation

self-hostede2e-encryptedprivacy-focused

Alternative to: Google Drive

Explore

Design & Graphics600

GPL-3.0Free

Glaxnimate

Vector animation program for creating Lottie animations, GIFs, and animated SVG graphics

desktopcross-platform

Alternative to: Adobe After Effects

Explore

Productivity15.0k

MITFree

Actual Budget

Privacy-focused personal budgeting app with local-first data and optional sync capabilities

self-hostedweb-baseddocker

Alternative to: Google Sheets

Explore

Media & Entertainment5.6k

GPL-3.0Free

cmus

Fast and lightweight console music player for Unix-like operating systems

clilightweight

Alternative to: Spotify

Explore

Cloud Storage5.2k

otherFreemium

Duplicacy

Cloud backup tool with lock-free deduplication supporting multiple storage backends

clicross-platforme2e-encrypted

Alternative to: Dropbox, Google Drive

Explore

Game Development300

MITFree

itch.io Butler

Command-line tool for uploading and distributing games on the itch.io indie game platform

cligolang

Alternative to: Steam, Epic Games Store

Explore

Development Tools45.0k

MITFree

Gitea

Lightweight self-hosted Git service for code hosting, review, and team collaboration

self-hostedgolangdocker

Alternative to: GitHub, Bitbucket

Explore

Design & Graphics38.0k

Apache-2.0Free

tldraw

Collaborative digital whiteboard with a fast, minimal interface for drawing and diagramming

web-basedcollaborativetypescript

Alternative to: Figma

Explore

Databases30.0k

otherFreemium

CockroachDB

Distributed SQL database designed for cloud-native applications with automatic scaling and survivability

self-hosteddockerenterprise

Alternative to: Oracle Database, Azure Cosmos DB, Amazon RDS

Explore

Game Development23.0k

otherFree+1

raylib

Simple C library for learning game programming and building cross-platform video games

cross-platformclilightweight

Alternative to: Unity

Explore

Cloud Storage11.4k

BSD-3Free

BorgBackup

Deduplicating archiver with compression and encryption for efficient and secure data backup

clipythone2e-encrypted

Alternative to: Google Drive

Explore

Finance & Accounting6.0k

GPL-3.0Free

GnuCash

Double-entry accounting software for personal and small business financial management and tracking

desktopcross-platformoffline-capable

Alternative to: QuickBooks, Xero

Explore

Game Development4.5k

otherFree+2

Defold

Cross-platform 2D game engine focused on performance with Lua scripting and small build sizes

cross-platformdesktoplightweight

Alternative to: Unity, Defold Cloud

Explore

Cloud Storage1.1k

AGPL-3.0Freemium

Cozy Cloud

Personal cloud platform for collecting and managing personal data with apps and connectors

self-hostedweb-baseddocker

Alternative to: Google Drive, iCloud

Explore

Cloud Storage700

AGPL-3.0Free

UrBackup

Client-server backup system with image and file backups for Windows and Linux

self-hostedcross-platform

Alternative to: Dropbox, Box

Explore

Analytics & BI200

AGPL-3.0Freemium

Fugu

Simple and privacy-friendly product analytics for understanding user behavior

rubyself-hostedsimple

Alternative to: Google Analytics, Mixpanel

Explore

DevOps & Infrastructure60.0k

MITFree

Uptime Kuma

Self-hosted monitoring tool that checks website and service uptime with status page dashboards

self-hosteddockerweb-based

Alternative to: PagerDuty, Datadog

Explore

Development Tools51.0k

GPL-3.0Free

Zed

High-performance multiplayer code editor built in Rust with AI-assisted coding features

rustdesktopcollaborative

Alternative to: Sublime Text, Visual Studio

Explore

DevOps & Infrastructure28.5k

Apache-2.0Free

K3s

Lightweight certified Kubernetes distribution designed for resource-constrained environments and edge computing

kubernetesgolanglightweight

Alternative to: Amazon Web Services, Microsoft Azure, Google Cloud Platform

Explore

Security & Privacy17.5k

BSD-3Free

age

Simple modern file encryption tool with small explicit keys and no configuration options

cligolanglightweight

Alternative to: 1Password, LastPass

Explore

Design & Graphics6.5k

GPL-3.0Free

FontForge

Font editor for creating and modifying PostScript, TrueType, and OpenType fonts

desktopcross-platformextensible

Alternative to: Adobe Illustrator

Explore

Development Tools40.0k

Apache-2.0Freemium

DBeaver

Universal database management tool supporting SQL, NoSQL, and cloud databases with visual query builder

cross-platformdesktopjava

Alternative to: DataGrip

Explore

Development Tools39.0k

otherFreemium

Sentry

Application monitoring platform for error tracking, performance monitoring, and crash reporting

self-hostedpythondocker

Alternative to: Jira

Explore

Cloud Storage27.0k

Apache-2.0Free

File Browser

Web-based file manager with upload, download, sharing, and user management capabilities

self-hostedgolangdocker

Alternative to: Google Drive, Dropbox

Explore

Development Tools26.0k

MITFree

VSCodium

Community-driven freely-licensed binary distribution of VS Code without Microsoft telemetry or branding

electronprivacy-focusedextensible

Alternative to: Visual Studio, Sublime Text

Explore

Security & Privacy14.0k

otherFreemium

authentik

Self-hosted identity provider supporting SAML, OAuth, and LDAP for unified authentication

self-hosteddockerpython

Alternative to: Okta, Auth0

Explore

Analytics & BI12.0k

Apache-2.0Freemium

Dagster

Data orchestration platform for building, testing, and monitoring data pipelines

pythonself-hosteddocker

Alternative to: Databricks

Explore

Cloud Storage11.2k

LGPL-3.0Free

Duplicati

Encrypted backup client that stores backups online with deduplication and incremental upload support

cross-platformdesktope2e-encrypted

Alternative to: Google Drive, Dropbox

Explore

Media & Entertainment9.5k

MITFree

Owncast

Self-hosted live video and web chat server for running your own live streams

self-hostedgolangreal-time

Alternative to: Spotify

Explore

Communication8.6k

LGPL-3.0Free

BigBlueButton

Web conferencing system designed for online learning with whiteboard, polling, and breakout rooms

self-hostedweb-basedcollaborative

Alternative to: Zoom, Microsoft Teams

Explore

Communication6.3k

BSD-3Free

Mumble

Low-latency voice over IP application designed for gaming with positional audio support

self-hostede2e-encrypteddesktop

Alternative to: Discord

Explore

Media & Entertainment3.2k

GPL-3.0Free+1

Stremio

Media center for streaming movies, series, and live TV from multiple content sources

desktopcross-platformplugin-system

Alternative to: Spotify

Explore

Game Development23.5k

Apache-2.0Free+2

libGDX

Java game development framework for cross-platform 2D and 3D games on desktop and mobile

cross-platformjavadesktop

Alternative to: Unity

Explore

Cloud Storage14.2k

LGPL-3.0Free

Ceph

Distributed storage system providing block, object, and file storage in a unified platform

distributedself-hostedenterprise

Alternative to: Amazon Web Services, Microsoft Azure

Explore

Databases10.5k

MITFree

Garnet

High-performance cache store from Microsoft compatible with Redis protocol

csharpcachevalkey-compatible

Alternative to: Valkey Enterprise

Explore

Productivity4.5k

otherFree+1

Anytype

Local-first personal knowledge management tool with object-based structure and peer-to-peer sync

e2e-encrypteddesktopoffline-capable

Alternative to: Notion, Evernote

Explore

Cloud Storage1.9k

GPL-3.0Free

Borgmatic

Simple wrapper around BorgBackup for automating deduplicating encrypted backups

clipythondocker

Alternative to: Dropbox, iCloud

Explore

Cloud Storage1.4k

GPL-3.0Free

ProjectSend

Self-hosted file sharing application for uploading and managing files for clients and groups

self-hostedweb-baseddocker

Alternative to: Dropbox, Box

Explore

Communication1.1k

AGPL-3.0Free+1

Revolt

User-first chat platform with servers, channels, and bots built for communities and friends

self-hostedrustweb-based

Alternative to: Discord

Explore

Content Management800

MITFreemium

Concrete CMS

User-friendly content management system with in-context editing and drag-and-drop page building

self-hostedweb-basedextensible

Alternative to: Squarespace, Wix

Explore

Design & Graphics700

MITFree

ColorPicker

Web-based color picker tool for selecting, converting, and generating color palettes for designers

desktoplightweight

Alternative to: Adobe Photoshop

Explore

Media & Entertainment14.5k

GPL-3.0Free

Blender (Video Editing)

3D creation suite with a built-in video sequence editor for compositing and editing

desktopcross-platformplugin-system

Alternative to: Adobe After Effects, Adobe Premiere Pro

Explore

Design & Graphics5.2k

GPL-3.0Free

Akira

Native Linux application for UI and UX design with a focus on simplicity and usability

desktoplightweight

Alternative to: Figma, Sketch

Explore

Productivity5.0k

AGPL-3.0Free

Vikunja

Open-source to-do and task management app with lists, kanban, Gantt charts, and calendar

self-hostedweb-baseddocker

Alternative to: Todoist, Trello

Explore

Design & Graphics2.7k

GPL-3.0Free

MyPaint

Fast and distraction-free digital painting application with infinite canvas and brush engine

cross-platformdesktoppython

Alternative to: Adobe Photoshop

Explore

Design & Graphics1.8k

GPL-3.0Free

Synfig Studio

Industrial-strength 2D vector animation software with bone system and tweening capabilities

cross-platformdesktop

Alternative to: Adobe After Effects

Explore

Education600

MPL-2.0Free

ClassQuiz

Open-source quiz platform similar to Kahoot for interactive classroom engagement

self-hosteddockerpython

Alternative to: Kahoot!

Explore

Development Tools500

MITFree

Atom Community

Community-maintained hackable text editor with deep Git integration and package ecosystem

electrondesktopextensible

Alternative to: Sublime Text

Explore

Design & Graphics350

BSD-3Free

Gpick

Advanced color picker and palette editor for designers and digital artists

desktoplightweight

Alternative to: Figma

Explore

Development Tools45.0k

MITFree

Gogs

Painless self-hosted Git service written in Go with minimal resource requirements

self-hostedgolangdocker

Alternative to: GitHub, Bitbucket

Explore

Development Tools34.0k

otherFreemium

HTTPie Desktop

User-friendly API testing client with intuitive interface for sending and inspecting HTTP requests

desktopapi-firstpython

Alternative to: Postman

Explore

Communication21.5k

Apache-2.0Freemium+3

Zulip

Organized team chat with topic-based threading that combines email and chat for productivity

self-hostedenterprisedocker

Alternative to: Slack, Microsoft Teams

Explore

Design & Graphics20.0k

LGPL-3.0Free

FreeCAD

Parametric 3D CAD modeler for engineering and product design with Python scripting support

desktopcross-platformplugin-system

Alternative to: Figma

Explore

Media & Entertainment17.8k

GPL-3.0Free

HandBrake

Video transcoder for converting video files between formats with presets for common devices

desktopcross-platformcli

Alternative to: Adobe Premiere Pro

Explore

Development Tools16.0k

MITFree

Biome

Fast formatter and linter for JavaScript, TypeScript, JSX, and JSON written in Rust

rustclilightweight

Alternative to: Visual Studio

Explore

Security & Privacy15.8k

Apache-2.0Freemium

Ory Hydra

OpenID Connect certified OAuth 2.0 server and authorization layer for secure API access

self-hostedgolangdocker

Alternative to: Okta, Auth0

Explore

Design & Graphics9.8k

GPL-3.0Free

darktable

Photography workflow application and raw image developer for non-destructive editing of digital negatives

cross-platformdesktopplugin-system

Alternative to: Adobe Lightroom

Explore

Game Development9.4k

MITFree

Playnite

Unified game library manager that imports games from Steam, Epic, GOG, and other platforms

desktopextensibleplugin-system

Alternative to: Steam

Explore

Cloud Storage7.6k

Apache-2.0Free

VeraCrypt

Disk encryption software for creating encrypted volumes and securing entire partitions or drives

e2e-encryptedcross-platformdesktop

Alternative to: Google Drive

Explore

Content Management5.5k

MITFree

Cockpit CMS

Headless content management platform with flexible content modeling and JSON API access

self-hostedapi-firstdocker

Alternative to: Contentful, Sanity

Explore

Productivity4.2k

GPL-3.0Free

DokuWiki

Simple and versatile wiki software that stores data in plain text files without a database

self-hostedweb-basedplugin-system

Alternative to: Confluence, Notion

Explore

E-Commerce3.7k

MITFree

Aimeos

Ultra-fast Laravel e-commerce package for building high-performance online shops and marketplaces

self-hostedapi-firstextensible

Alternative to: Shopify, Magento Commerce

Explore

Game Development3.2k

otherFree

Armory3D

3D game engine integrated with Blender for creating games using visual logic nodes

desktopcross-platform

Alternative to: Unity, Unreal Engine

Explore

E-Commerce3.0k

MITFreemium

Alokai

Frontend-as-a-service framework for building performant storefronts connected to e-commerce backends

self-hostedtypescriptapi-first

Alternative to: Shopify, BigCommerce

Explore

Communication2.7k

GPL-3.0Freemium+2

Wire

Secure collaboration platform with encrypted messaging, video calls, and file sharing for teams

e2e-encryptedcross-platformenterprise

Alternative to: Slack, Microsoft Teams

Explore

Analytics & BI300

MITFree

Freshlytics

Self-hosted privacy-respecting web analytics service with a simple clean dashboard interface

self-hosteddockerprivacy-focused

Alternative to: Google Analytics

Explore

Cloud Storage

MPL-2.0Free

Syncthing Android

Android client for Syncthing peer-to-peer file synchronization with continuous background sync

e2e-encryptedprivacy-focusedcross-platform

Alternative to: pCloud

Explore

Education405.0k

BSD-3Free

freeCodeCamp

Free, nonprofit learning platform with thousands of coding tutorials, projects, and certifications

web-basedtypescriptcollaborative

Alternative to: Coursera, Udemy

Explore

DevOps & Infrastructure72.0k

GPL-3.0Freemium

Netdata

Real-time performance monitoring tool providing per-second metrics with zero-configuration setup

self-hosteddockerweb-based

Alternative to: Datadog, New Relic

Explore

Productivity58.0k

AGPL-3.0Free

AppFlowy

Privacy-first open-source workspace for notes, wikis, and project management with AI features

rustdesktopcollaborative

Alternative to: Notion

Explore

DevOps & Infrastructure35.0k

Apache-2.0Freemium

Coolify

Self-hosted PaaS alternative for deploying applications, databases, and services with Git push

self-hosteddockerweb-based

Alternative to: Heroku, Vercel

Explore

Cloud Storage33.0k

AGPL-3.0Free

Spacedrive

Cross-platform file explorer that unifies cloud and local storage into one virtual filesystem

rustdesktopcross-platform

Alternative to: Google Drive, Dropbox

Explore

Development Tools31.0k

AGPL-3.0Freemium

Plane

Open-source project management tool with issues, sprints, cycles, and product roadmaps

self-hostedweb-basedcollaborative

Alternative to: Jira

Explore

Cloud Storage23.0k

GPL-3.0Free

Paperless-ngx

Document management system that transforms physical documents into searchable online archives

self-hosteddockerpython

Alternative to: Google Drive

Explore

Databases20.5k

Apache-2.0Freemium

Dgraph

Distributed graph database with native GraphQL support designed for high performance

golangself-hosteddocker

Alternative to: MongoDB Atlas, Amazon DynamoDB

Explore

Databases13.5k

Apache-2.0Free

Apache Druid

Real-time analytics database designed for fast slice-and-dice analytics on event-driven data

self-hosteddockerenterprise

Alternative to: Snowflake, Databricks

Explore

E-Commerce12.2k

GPL-3.0Free

Mailchimp Open Commerce

API-first, modular commerce platform for building custom ecommerce experiences

self-hosteddockerapi-first

Alternative to: Shopify

Explore

Communication11.5k

MITFree

Gotify

Self-hosted push notification server with REST API for sending and receiving real-time messages

self-hostedgolangdocker

Alternative to: Slack

Explore

Design & Graphics7.2k

GPL-3.0Free

OpenSCAD

Programmer's solid 3D CAD modeler using script-based geometry for precise technical designs

desktopcross-platformcli

Alternative to: Figma

Explore

Media & Entertainment4.9k

MITFree

librespot

Open-source client library for Spotify compatible with the Spotify Connect protocol

rustclicross-platform

Alternative to: Spotify

Explore

Finance & Accounting4.5k

AGPL-3.0Freemium

Ghostfolio

Privacy-first wealth management dashboard for tracking stocks, ETFs, and cryptocurrencies

self-hostedtypescriptdocker

Alternative to: Mint

Explore

Cloud Storage2.0k

AGPL-3.0Free

Peergos

Private and decentralized file storage, sharing, and social network with end-to-end encryption

self-hostede2e-encrypteddecentralized

Alternative to: Google Drive, Dropbox

Explore

Design & Graphics1.9k

GPL-3.0Free

digiKam

Advanced photo management application with tagging, face recognition, and geolocation features

cross-platformdesktopplugin-system

Alternative to: Adobe Lightroom

Explore

Content Management1.2k

MITFree

Bludit

Flat-file CMS that uses JSON to store content, requiring no database installation

self-hostedlightweightmarkdown

Alternative to: WordPress.com, Squarespace

Explore

Game Development900

MITFree

microStudio

Browser-based game development environment for creating games with built-in code editor and sprites

web-basedcollaborative

Alternative to: Construct, GameMaker

Explore

Game Development800

GPL-3.0Free

Solarus

Action-RPG game engine for creating 2D adventure games in the style of classic Zelda

desktopcross-platformlightweight

Alternative to: RPG Maker

Explore

Education600

MITFreemium

CourseLit

Self-hosted platform for creating and selling online courses with built-in payment support

self-hostedtypescriptdocker

Alternative to: Teachable, Thinkific

Explore

DevOps & Infrastructure63.0k

GPL-3.0Free

Ansible

Agentless automation tool for configuration management, application deployment, and IT orchestration

clipythonenterprise

Alternative to: Ansible Tower

Explore

Cloud Storage47.5k

MITFree

Rclone

Command-line program to manage and sync files across cloud storage providers and local filesystems

cligolangcross-platform

Alternative to: Google Drive, Dropbox, OneDrive

Explore

Databases45.0k

BSD-3Freemium

Appwrite

Backend server platform providing authentication, database, storage, and functions for app development

self-hostedapi-firstdocker

Alternative to: Firebase

Explore

Development Tools34.0k

MPL-2.0Free

Helix

Post-modern modal text editor with built-in language server support and tree-sitter integration

rustclilightweight

Alternative to: Sublime Text

Explore

Development Tools21.0k

otherFree

Focalboard

Project management tool with Kanban boards, table views, and calendar for task organization

self-hosteddesktopgolang

Alternative to: Jira

Explore

Analytics & BI18.0k

otherFreemium

Cube.js

Headless business intelligence platform providing a semantic layer for building analytics applications

self-hosteddockerapi-first

Alternative to: Looker

Explore

Game Development16.2k

BSD-3Free

OpenEmu

Multi-system game emulator for macOS with a beautiful, unified interface for retro gaming

desktopplugin-system

Alternative to: Steam

Explore

Media & Entertainment12.8k

GPL-3.0Free

Audacity

Multi-track audio editor and recorder for recording, editing, and mixing sound files

desktopcross-platformplugin-system

Alternative to: Adobe Audition, Pro Tools

Explore

Cloud Storage10.5k

AGPL-3.0Free

Filestash

Web-based file manager connecting to multiple storage backends like S3, FTP, and SFTP

self-hostedweb-baseddocker

Alternative to: Google Drive, Dropbox

Explore

Analytics & BI10.0k

Apache-2.0Free

dbt Core

Data transformation tool that enables analytics engineers to transform data using SQL

pythonclidocker

Alternative to: Databricks, Looker

Explore

Security & Privacy3.8k

BSD-3Free

DefectDojo

Security orchestration and vulnerability management platform for DevSecOps teams

pythondjangoself-hosted

Alternative to: CrowdStrike

Explore

Design & Graphics3.5k

GPL-3.0Free

SolveSpace

Parametric 2D and 3D CAD modeler with constraint-based sketching and assembly modeling

desktopcross-platformlightweight

Alternative to: Figma

Explore

Finance & Accounting3.4k

GPL-3.0Free

Beancount

Plain-text double-entry bookkeeping system using a simple input language for financial tracking

clipythonoffline-capable

Alternative to: QuickBooks, Mint

Explore

Media & Entertainment3.1k

Apache-2.0Free

AzuraCast

Self-hosted web radio station management suite for broadcasting live and automated audio streams

self-hosteddockerweb-based

Alternative to: Spotify

Explore

Game Development1.6k

MITFree

ct.js

Visual game editor for creating 2D games with a drag-and-drop interface and JavaScript

web-baseddesktopno-code

Alternative to: Construct, GameMaker

Explore

Communication1.3k

GPL-3.0Free+1

Linphone

SIP-based voice and video communication client for internet telephony on desktop and mobile

cross-platformmobile-friendlydesktop

Alternative to: Skype, Zoom

Explore

Education900

GPL-3.0Free

Adapt Learning

Authoring tool for creating responsive multi-device e-learning content and interactive courses

web-basedextensible

Alternative to: Coursera, Teachable

Explore

Finance & Accounting200

GPL-3.0Free

Skrooge

KDE-based personal finance manager for tracking income, expenses, and budgets on Linux

desktopcross-platform

Alternative to: Mint, QuickBooks

Explore

DevOps & Infrastructure59.0k

Apache-2.0Free

Caddy

Modern web server with automatic HTTPS, HTTP/3, and simple configuration out of the box

self-hostedgolangdocker

Alternative to: Amazon Web Services, Microsoft Azure

Explore

Cloud Storage53.0k

AGPL-3.0Free

Immich

Self-hosted photo and video backup solution with mobile app, facial recognition, and timeline

self-hosteddockermobile-friendly

Alternative to: Google Drive, iCloud

Explore

Databases48.0k

Apache-2.0Free

etcd

Distributed reliable key-value store for critical configuration data and service discovery

self-hostedgolangdocker

Alternative to: Amazon DynamoDB

Explore

Game Development44.0k

MITFree

PixiJS

Fast 2D rendering library for creating interactive graphics and games in web browsers

web-basedtypescriptlightweight

Alternative to: Construct

Explore

Productivity33.0k

AGPL-3.0Free+1

Logseq

Privacy-first knowledge management tool with outliner, graph view, and bidirectional linking

desktopmarkdownplugin-system

Alternative to: Notion, Evernote

Explore

Communication30.5k

otherFreemium+3

Mattermost

Secure team messaging platform with channels, file sharing, and workflow automation for enterprises

self-hostedenterprisedocker

Alternative to: Slack, Microsoft Teams

Explore

Media & Entertainment28.0k

GPL-3.0Free

LosslessCut

Swiss army knife of lossless video and audio trimming and cutting

electroncross-platformlightweight

Alternative to: Adobe Premiere Pro

Explore

Databases21.0k

GPL-3.0Freemium

Typesense

Fast typo-tolerant search engine optimized for instant search experiences with simple API

self-hosteddockerapi-first

Alternative to: Firebase

Explore

Finance & Accounting16.5k

AGPL-3.0Free

Firefly III

Self-hosted personal finance manager for tracking expenses, budgets, and financial transactions

self-hosteddockerweb-based

Alternative to: Mint, QuickBooks

Explore

Databases13.8k

Apache-2.0Freemium

ArangoDB

Multi-model database supporting document, graph, and key-value data with unified query language

self-hosteddockerenterprise

Alternative to: MongoDB Atlas, Azure Cosmos DB

Explore

Productivity12.0k

MITFreemium

Baserow

No-code database platform with spreadsheet interface, forms, and API for building applications

self-hostedweb-baseddocker

Alternative to: Airtable, Google Sheets

Explore

Cloud Storage11.0k

Apache-2.0Freemium

JuiceFS

POSIX-compatible distributed file system built on top of object storage for cloud-native workloads

golangposixdistributed

Alternative to: Amazon Web Services, Google Drive

Explore

Media & Entertainment10.5k

GPL-3.0Free

Peek

Simple animated GIF and video screen recorder with an easy-to-use interface

desktoplightweight

Alternative to: Camtasia

Explore

Productivity10.5k

AGPL-3.0Free

Zotero

Reference management software for collecting, organizing, and citing research sources

desktopcross-platformplugin-system

Alternative to: Notion, Evernote

Explore

Productivity7.5k

AGPL-3.0Free

Docmost

Collaborative wiki and documentation software with real-time editing and rich content support

self-hostedweb-basedcollaborative

Alternative to: Notion, Google Docs

Explore

Cloud Storage6.5k

Apache-2.0Free

Perkeep

Personal storage system for archiving, sharing, and organizing any kind of content

golangself-hostedcross-platform

Alternative to: Google Drive, Dropbox

Explore

Game Development5.9k

GPL-3.0Free

Veloren

Multiplayer voxel RPG inspired by games like Cube World with procedural generation

rustdesktopcross-platform

Alternative to: Steam

Explore

DevOps & Infrastructure5.8k

Apache-2.0Free

Kyverno

Kubernetes-native policy engine for validating, mutating, and generating configurations

golangkubernetesdocker

Alternative to: Datadog

Explore

Media & Entertainment4.5k

GPL-3.0Free

Mixxx

DJ mixing software with beat matching, looping, and effects for live performances

desktopcross-platformplugin-system

Alternative to: Ableton Live

Explore

Content Management4.4k

MITFreemium

Apostrophe CMS

Full-stack Node.js CMS with in-context editing, structured content, and rich text support

self-hostedweb-basedtypescript

Alternative to: HubSpot CMS, WordPress.com

Explore

Security & Privacy4.4k

GPL-3.0Free

OSSEC HIDS

Host-based intrusion detection system for log analysis, integrity checking, and alerting

self-hostedcross-platformenterprise

Alternative to: CrowdStrike, Splunk Security

Explore

Media & Entertainment3.9k

GPL-3.0Free

Ardour

Professional digital audio workstation for multi-track recording, editing, and mixing music

desktopcross-platformplugin-system

Alternative to: Pro Tools, Logic Pro, Ableton Live

Explore

Media & Entertainment3.8k

AGPL-3.0Free

Dim

Self-hosted media manager powered by Rust for organizing and streaming your media library

rustself-hostedmedia-server

Alternative to: Spotify

Explore

Productivity3.2k

MITFree

SilverBullet

Extensible, self-hosted knowledge management system built on Markdown and web standards

typescriptmarkdownself-hosted

Alternative to: Notion, Evernote

Explore

Finance & Accounting2.6k

AGPL-3.0Freemium

Bigcapital

Online accounting software for small businesses with invoicing, expenses, and financial reports

self-hostedtypescriptdocker

Alternative to: QuickBooks, Xero

Explore

Media & Entertainment2.1k

AGPL-3.0Free

Zrythm

Digital audio workstation designed for intuitive music production with a modern user interface

desktopcross-platformplugin-system

Alternative to: Ableton Live, Logic Pro

Explore

Finance & Accounting1.9k

MITFree

Fava

Web-based frontend for Beancount providing interactive charts and reports for financial data

web-basedpython

Alternative to: Mint, QuickBooks

Explore

Game Development1.9k

MITFree+2

HaxeFlixel

Cross-platform 2D game engine powered by Haxe for creating games on multiple platforms

cross-platformdesktoplightweight

Alternative to: GameMaker, Construct

Explore

E-Commerce1.6k

Apache-2.0Freemium

Broadleaf Commerce

Enterprise-grade, Java-based ecommerce framework for building custom online stores

javaself-hostedenterprise

Alternative to: Salesforce Commerce Cloud, Magento Commerce

Explore

Media & Entertainment500

GPL-3.0Free

Tenacity

Privacy-focused fork of Audacity for multi-track audio recording, editing, and processing

desktopcross-platform

Alternative to: Adobe Audition

Explore

Design & Graphics450

GPL-3.0Free

BirdFont

Font editor for creating TTF, OTF, and SVG fonts with an intuitive graphical interface

desktopcross-platformlightweight

Alternative to: Adobe Illustrator

Explore

Finance & Accounting200

MITFree

Envelope Zero

Envelope budgeting application for managing personal finances with zero-based approach

self-hostedgolangdocker

Alternative to: Mint, QuickBooks

Explore

Design & Graphics88.0k

MITFree

Excalidraw

Virtual whiteboard for sketching hand-drawn-like diagrams with real-time collaboration support

web-basedcollaborativereal-time

Alternative to: Figma

Explore

DevOps & Infrastructure56.0k

Apache-2.0Free

Prometheus

Time-series monitoring system that collects metrics via pull-based scraping with built-in alerting

self-hostedgolangdocker

Alternative to: Datadog, New Relic

Explore

Content Management49.5k

MITFree

Jekyll

Static site generator that transforms plain text into static websites and blogs using Ruby

climarkdowngit-based

Alternative to: Squarespace, Wix

Explore

Communication42.5k

GPL-3.0Freemium

Discourse

Modern forum platform for civilized community discussion with real-time updates

self-hosteddockerweb-based

Alternative to: Slack, Discord

Explore

Databases38.0k

Apache-2.0Freemium

ClickHouse

Column-oriented database management system for real-time analytics on large-scale datasets

self-hosteddockerenterprise

Alternative to: Snowflake, Databricks

Explore

Media & Entertainment36.0k

GPL-3.0Free+2

Jellyfin

Self-hosted media server for organizing and streaming movies, TV shows, music, and photos

self-hosteddockerweb-based

Alternative to: Spotify

Explore

DevOps & Infrastructure29.0k

MITFree

Dokku

Minimalist PaaS implementation powered by Docker for deploying apps via Git push

self-hosteddockercli

Alternative to: Heroku

Explore

Development Tools25.0k

MITFree

ESLint

Pluggable JavaScript and TypeScript linter for identifying and fixing code quality issues

typescriptcliplugin-system

Alternative to: Visual Studio

Explore

Communication21.5k

MITFreemium

Chatwoot

Customer engagement platform with live chat, email, and social media support channel management

self-hostedweb-baseddocker

Alternative to: Intercom, Zendesk

Explore

Security & Privacy21.0k

MITFree

Nuclei

Fast and customizable vulnerability scanner based on simple YAML templates

golangclivulnerability-scanner

Alternative to: CrowdStrike, Splunk Security

Explore

Content Management18.5k

MPL-2.0Free

mdBook

Utility to create online books from Markdown files, similar to GitBook but written in Rust

rustclimarkdown

Alternative to: Contentful, Squarespace

Explore

Content Management17.0k

MITFree

Netlify CMS

Git-based open source content management system for static site generators and web projects

git-basedweb-basedmarkdown

Alternative to: Contentful, Sanity

Explore

Development Tools15.5k

MITFree

BookStack

Simple and organized wiki platform with books, chapters, and pages structure for documentation

self-hostedweb-baseddocker

Alternative to: Confluence

Explore

Media & Entertainment14.2k

GPL-3.0Free+1

VLC Media Player

Free cross-platform multimedia player that plays most media files and streaming protocols

desktopcross-platformplugin-system

Alternative to: Spotify

Explore

DevOps & Infrastructure13.5k

Apache-2.0Free

CapRover

Self-hosted PaaS for deploying web apps with automatic SSL, Docker support, and one-click installs

self-hosteddockerweb-based

Alternative to: Heroku, Vercel

Explore

Security & Privacy9.2k

MITFreemium

CrowdSec

Collaborative security engine that analyzes behavior and blocks malicious IPs using crowd intelligence

self-hostedgolangdocker

Alternative to: CrowdStrike, Norton

Explore

Finance & Accounting8.0k

AGPL-3.0Free

Crater

Free open-source invoicing application for freelancers and small businesses

self-hosteddockerweb-based

Alternative to: FreshBooks, QuickBooks

Explore

Databases6.2k

MITFree

DbGate

Cross-platform database manager supporting MySQL, PostgreSQL, SQL Server, MongoDB, and more

cross-platformelectronweb-based

Alternative to: DataGrip

Explore

Analytics & BI6.1k

MITFreemium

GrowthBook

Feature flagging and experimentation platform for running A/B tests and analyzing results

self-hosteddockertypescript

Alternative to: Amplitude, Mixpanel

Explore

Game Development5.6k

GPL-3.0Free

Battle for Wesnoth

Turn-based tactical strategy game with single-player campaigns and online multiplayer battles

desktopcross-platform

Alternative to: Steam

Explore

Game Development5.1k

otherFree+1

LOVE

2D game framework using Lua scripting for quick and easy game development prototyping

cross-platformdesktoplightweight

Alternative to: GameMaker, RPG Maker

Explore

Security & Privacy4.6k

GPL-3.0Free

ClamAV

Open source antivirus engine for detecting trojans, viruses, malware, and other threats

self-hostedclicross-platform

Alternative to: Norton, McAfee

Explore

Security & Privacy4.6k

GPL-3.0Free

OSSEC

Host-based intrusion detection system that performs log analysis, rootkit detection, and alerting

self-hostedclicross-platform

Alternative to: CrowdStrike, Splunk Security

Explore

E-Commerce3.7k

LGPL-3.0Free

Aimeos

Ultra-fast, cloud-native ecommerce framework supporting millions of items and high traffic

self-hostedenterpriseextensible

Alternative to: Shopify, Magento Commerce

Explore

Finance & Accounting3.5k

MITFree

Actual Server

Self-hosted server component for Actual Budget enabling sync across devices

self-hostedtypescriptdocker

Alternative to: Mint, QuickBooks

Explore

Finance & Accounting3.0k

GPL-3.0Free

hledger

Plain-text double-entry accounting tool for tracking finances using simple human-readable journal files

clioffline-capable

Alternative to: QuickBooks, Mint

Explore

Development Tools2.2k

AGPL-3.0Freemium

CodiumAI

AI-powered code integrity tool that generates meaningful tests and reviews code quality

ai-poweredcliextensible

Alternative to: IntelliJ IDEA

Explore

Cloud Storage1.9k

AGPL-3.0Free

Peergos

Peer-to-peer encrypted storage, social media, and application platform

javae2e-encryptedp2p

Alternative to: Google Drive, Dropbox

Explore

Security & Privacy1.8k

GPL-3.0Free

Snort

Network intrusion detection and prevention system using rule-based real-time traffic analysis

self-hostedcli

Alternative to: CrowdStrike, Splunk Security

Explore

Media & Entertainment1.4k

GPL-3.0Free

gPodder

Simple podcast client for downloading and managing podcast subscriptions across devices

desktoppythonlightweight

Alternative to: Spotify

Explore

Productivity1.2k

GPL-3.0Free

Traggo

Tag-based time tracking tool with a clean interface and self-hosting support

self-hostedgolangdocker

Alternative to: Todoist, Asana

Explore

Game Development900

GPL-3.0Free+1

EasyRPG

RPG Maker 2000/2003 game interpreter enabling classic RPG games to run on modern platforms

cross-platformdesktopmobile-friendly

Alternative to: RPG Maker

Explore

Communication700

MPL-2.0Free

Betterbird

Enhanced Thunderbird fork with improved UI, better search, and quality-of-life patches

desktopcross-platformprivacy-focused

Alternative to: Mailchimp

Explore

Finance & Accounting700

MITFree

Denaro

Personal finance manager for GNOME and Windows with a clean, modern interface

desktoplightweightcross-platform

Alternative to: Mint

Explore

Finance & Accounting200

GPL-3.0Free

FrontAccounting

Web-based accounting system for small and medium enterprises with general ledger and reporting

self-hostedweb-based

Alternative to: QuickBooks, Sage

Explore

Media & Entertainment200

AGPL-3.0Free

OpenBroadcaster

Open-source broadcast automation software for radio and media scheduling

self-hostedweb-based

Alternative to: Spotify

Explore

Education200

AGPL-3.0Free

OpenStax Tutor

Intelligent tutoring system delivering personalized learning using free peer-reviewed textbooks

web-basedpythonself-hosted

Alternative to: Coursera, Udemy

Explore

Development Tools84.0k

Apache-2.0Free

Neovim

Hyperextensible Vim-based text editor focused on usability, extensibility, and modern terminal features

cliextensibleplugin-system

Alternative to: Sublime Text, Visual Studio

Explore

Development Tools66.0k

MITFree

Hoppscotch

Open-source API development ecosystem for testing REST, GraphQL, and WebSocket endpoints

web-basedapi-firsttypescript

Alternative to: Postman

Explore

Content Management28.5k

otherFreemium

Directus

Data platform that wraps any SQL database with real-time GraphQL and REST API access

self-hostedapi-firstdocker

Alternative to: Contentful, Sanity

Explore

Databases24.0k

MITFree

DuckDB

In-process analytical database with fast columnar storage optimized for OLAP and data science

lightweightclicross-platform

Alternative to: Snowflake, Databricks

Explore

Analytics & BI24.0k

AGPL-3.0Free

Grafana Loki

Horizontally scalable log aggregation system inspired by Prometheus, designed for cost efficiency

golangdockerkubernetes

Alternative to: Splunk, Datadog

Explore

Analytics & BI21.0k

AGPL-3.0Free

Plausible CE

Community edition of the privacy-friendly, cookie-free web analytics platform for self-hosting

self-hostedprivacy-focuseddocker

Alternative to: Google Analytics

Explore

Cloud Storage12.5k

AGPL-3.0Freemium+3

Seafile

High-performance file syncing and sharing solution with built-in encryption and team collaboration

self-hosteddockere2e-encrypted

Alternative to: Google Drive, Dropbox

Explore

Game Development11.0k

MITFreemium

GDevelop

No-code game engine for creating 2D and 3D games using visual event-based logic

no-codeweb-basedcross-platform

Alternative to: Construct, GameMaker, RPG Maker

Explore

Productivity10.5k

GPL-3.0Freemium+2

Notesnook

End-to-end encrypted note-taking app with rich text editor, notebooks, and cross-platform access

e2e-encryptedcross-platformprivacy-focused

Alternative to: Evernote

Explore

Cloud Storage8.4k

AGPL-3.0Freemium+3

ownCloud

Self-hosted file synchronization and sharing platform with encryption and access control

self-hosteddockerenterprise

Alternative to: Google Drive, Dropbox, OneDrive

Explore

Productivity5.3k

AGPL-3.0Freemium+1

ONLYOFFICE

Online office suite with document, spreadsheet, and presentation editors supporting real-time collaboration

self-hostedweb-basedcollaborative

Alternative to: Microsoft Office, Google Docs

Explore

Analytics & BI4.0k

MITFreemium

Lightdash

Open source BI tool that connects to dbt projects for self-serve analytics and exploration

self-hosteddockerweb-based

Alternative to: Looker, Tableau

Explore

E-Commerce2.8k

MITFreemium

Shopware

Open-source e-commerce platform with headless commerce, AI, and flexible content management

self-hosteddockerapi-first

Alternative to: Shopify, Magento Commerce

Explore

Security & Privacy1.2k

GPL-3.0Free

FreeIPA

Integrated identity management solution combining LDAP, Kerberos, DNS, and certificate services

self-hostedenterprise

Alternative to: Okta, Auth0

Explore

Education800

GPL-3.0Free

Chamilo

E-learning and collaboration platform focused on ease of use for teachers and students

self-hostedweb-based

Alternative to: Blackboard, Moodle Cloud

Explore

Analytics & BI800

AGPL-3.0Freemium

Pirsch

Cookie-free privacy-friendly web analytics solution with a clean lightweight dashboard interface

self-hostedgolangprivacy-focused

Alternative to: Google Analytics

Explore

Game Development800

GPL-3.0Free

RPG Paper Maker

3D RPG game creation tool for building role-playing games with a paper-like visual style

desktopno-code

Alternative to: RPG Maker

Explore

Media & Entertainment61.0k

GPL-3.0Free

OBS Studio

Free streaming and recording software for live video production and screen capture

desktopcross-platformplugin-system

Alternative to: Camtasia

Explore

Cloud Storage35.5k

AGPL-3.0Freemium

PhotoPrism

AI-powered self-hosted photo management with automatic tagging, face detection, and map view

self-hosteddockerai-powered

Alternative to: Google Drive, iCloud

Explore

DevOps & Infrastructure28.5k

otherFreemium

HashiCorp Consul

Service mesh and discovery tool for connecting and securing distributed services across infrastructure

self-hostedgolangdocker

Alternative to: Amazon Web Services, Microsoft Azure

Explore

Media & Entertainment25.0k

GPL-3.0Free

Flameshot

Powerful yet simple screenshot tool with built-in editor and annotation capabilities

desktopcross-platformlightweight

Alternative to: Camtasia

Explore

Productivity22.0k

AGPL-3.0Freemium+1

SiYuan

Local-first personal knowledge management system with block-level referencing and sync capabilities

desktopmarkdowne2e-encrypted

Alternative to: Notion, Evernote

Explore

Productivity16.8k

Apache-2.0Free

Etherpad

Real-time collaborative text editor that allows multiple authors to edit simultaneously in-browser

self-hostedweb-basedcollaborative

Alternative to: Google Docs

Explore

Development Tools16.5k

GPL-3.0Freemium

Beekeeper Studio

Modern SQL editor and database manager with intuitive interface for MySQL, PostgreSQL, and SQLite

cross-platformdesktopelectron

Alternative to: DataGrip

Explore

Cloud Storage14.2k

LGPL-3.0Free

Ceph

Distributed storage system providing object, block, and file storage in a unified platform

self-hostedenterprisedocker

Alternative to: Box

Explore

DevOps & Infrastructure12.9k

Apache-2.0Free

Fluentd

Unified logging layer for collecting and consuming logs from various data sources

enterprisedockerkubernetes

Alternative to: Splunk, Datadog

Explore

Media & Entertainment12.5k

GPL-3.0Free

Navidrome

Self-hosted music server and streamer compatible with Subsonic and Airsonic client applications

self-hosteddockergolang

Alternative to: Spotify

Explore

Game Development11.5k

otherFree+1

MonoGame

Cross-platform .NET game framework for building 2D and 3D games on desktop and mobile

cross-platformdesktop

Alternative to: Unity

Explore

Productivity11.5k

GPL-3.0Free

Xournal++

Handwriting note-taking software with PDF annotation support and pressure-sensitive pen input

cross-platformdesktoplightweight

Alternative to: Evernote

Explore

DevOps & Infrastructure9.5k

Apache-2.0Free

Crossplane

Cloud-native control plane for building infrastructure platforms using Kubernetes

golangkubernetesdocker

Alternative to: Terraform Cloud, Amazon Web Services

Explore

Analytics & BI9.5k

otherFreemium

OpenReplay

Session replay and product analytics platform for debugging user issues and improving web experiences

self-hosteddockertypescript

Alternative to: Hotjar, FullStory, Heap

Explore

Media & Entertainment8.2k

GPL-3.0Free

LMMS

Digital audio workstation for producing music with synthesizers, beat editors, and effects

desktopcross-platformplugin-system

Alternative to: Ableton Live, Logic Pro

Explore

Analytics & BI7.6k

MITFree

Fathom Lite

Simple privacy-focused website analytics tool that tracks page views without invasive data collection

self-hostedgolangprivacy-focused

Alternative to: Google Analytics

Explore

Media & Entertainment6.8k

GPL-3.0Free

Gyroflow

Video stabilization tool using gyroscope data for smooth action camera footage

rustdesktopcross-platform

Alternative to: Adobe Premiere Pro

Explore

DevOps & Infrastructure6.6k

Apache-2.0Freemium

Telepresence

Tool for fast local development of Kubernetes services with remote cluster connectivity

golangkubernetescli

Alternative to: Datadog

Explore

Communication5.8k

MITFree

Papercups

Open-source live chat widget for websites with real-time messaging and Slack integration

self-hostedweb-basedreal-time

Alternative to: Intercom

Explore

Communication5.6k

GPL-3.0Free

Mailtrain

Self-hosted newsletter application with automation, segmentation, and campaign tracking features

self-hosteddockerweb-based

Alternative to: Mailchimp

Explore

Content Management4.6k

GPL-3.0Free

Drupal

Enterprise-grade content management framework for building complex websites and digital experiences

self-hostedextensibleplugin-system

Alternative to: Adobe Experience Manager, Sitecore, Kentico

Explore

Security & Privacy4.4k

GPL-3.0Free

ClamAV

Open-source antivirus engine for detecting trojans, viruses, malware, and other threats

antiviruscross-platformcli

Alternative to: McAfee, Norton

Explore

Design & Graphics4.2k

GPL-3.0Free

Olive Video Editor

Non-linear video editor aiming to provide professional-grade editing with a modern interface

cross-platformdesktop

Alternative to: Adobe Premiere Pro

Explore

Media & Entertainment3.8k

GPL-3.0Free

MusicBrainz Picard

Cross-platform music tagger that automatically identifies and tags audio files using the MusicBrainz database

pythondesktopcross-platform

Alternative to: Spotify

Explore

Communication3.6k

MPL-2.0Free

Thunderbird

Full-featured email client with calendar, contacts, and chat integration across platforms

cross-platformdesktopextensible

Alternative to: Mailchimp

Explore

Security & Privacy3.2k

GPL-3.0Free

OpenVAS

Full-featured vulnerability scanner that identifies security issues across network infrastructure

self-hosteddockerenterprise

Alternative to: CrowdStrike, Norton

Explore

Communication2.9k

AGPL-3.0Free

FreeScout

Lightweight help desk and shared inbox solution for managing customer email conversations

self-hostedweb-baseddocker

Alternative to: Zendesk, Intercom

Explore

E-Commerce2.2k

otherFreemium

Shuup

Multi-vendor marketplace platform supporting multiple storefronts, products, and vendor management

self-hostedpythondocker

Alternative to: Shopify, BigCommerce

Explore

Security & Privacy1.3k

GPL-3.0Free

GnuPG

Complete implementation of the OpenPGP standard for encrypting and signing data and communications

clie2e-encryptedprivacy-focused

Alternative to: 1Password, LastPass

Explore

Education1.0k

Apache-2.0Free

Sakai

Community-built learning management system for academic institutions supporting teaching and research

self-hostedjavaenterprise

Alternative to: Blackboard, Canvas LMS Cloud

Explore

Education900

LGPL-3.0Free

Greenlight

Simple room management interface for BigBlueButton virtual classrooms and online meetings

self-hosteddockerweb-based

Alternative to: Google Classroom

Explore

Education750

MITFree+1

Kolibri

Offline-capable learning platform designed for low-resource environments and schools without internet

self-hostedpythonoffline-capable

Alternative to: Google Classroom, Coursera

Explore

Finance & Accounting300

MITFree

Budget Warrior

Command-line personal budget tracking tool for managing income, expenses, and savings goals

Alternative to: Mint

OpenOLAT

Web-based learning management system for universities with course management and assessment tools

self-hostedjavaenterprise

Alternative to: Blackboard, Canvas LMS Cloud

Explore

Media & Entertainment200

GPL-3.0Free

Cinelerra-GG

Professional video editing and compositing software for Linux with advanced features

desktop

Alternative to: Adobe Premiere Pro, Adobe After Effects

Explore

Finance & Accounting

otherFreemium

Banana Accounting

Professional accounting software with double-entry bookkeeping, budgeting, and financial planning features

desktopcross-platform

Alternative to: QuickBooks, Xero

Explore

Productivity49.0k

AGPL-3.0Freemium

NocoDB

No-code database platform that turns any database into a smart spreadsheet with API access

self-hostedweb-baseddocker

Alternative to: Airtable, Google Sheets

Explore

Content Management47.0k

MITFree

Astro

Web framework for content-driven websites with island architecture and zero JavaScript by default

typescriptweb-basedlightweight

Alternative to: Squarespace, Webflow, Wix

Explore

Productivity42.0k

MITFreemium

AFFiNE

Next-generation knowledge base combining docs, whiteboards, and databases in one workspace

web-basedcollaborativetypescript

Alternative to: Notion

Explore

Cloud Storage26.5k

BSD-3Free

Restic

Fast, secure, and efficient backup program with encryption, deduplication, and multiple backend support

cligolange2e-encrypted

Alternative to: Google Drive, Dropbox

Explore

Databases26.0k

otherFreemium

Dragonfly

Modern in-memory data store fully compatible with Redis and Memcached APIs with better performance

self-hosteddockerlightweight

Alternative to: Valkey Enterprise

Explore

DevOps & Infrastructure24.0k

Apache-2.0Free

Harbor

Cloud-native container registry with vulnerability scanning, RBAC, and image signing

golangdockerkubernetes

Alternative to: Docker Desktop

Explore

Security & Privacy23.5k

Apache-2.0Free

Keycloak

Enterprise identity and access management solution with single sign-on, social login, and user federation

self-hosteddockerenterprise

Alternative to: Okta, Auth0

Explore

DevOps & Infrastructure22.0k

Apache-2.0Freemium

Pulumi

Infrastructure-as-code platform using general-purpose programming languages to manage cloud resources

clitypescriptgolang

Alternative to: Terraform Cloud

Explore

Productivity21.0k

otherFree

Focalboard

Personal task and project organization tool with board, table, and gallery view options

self-hosteddesktopgolang

Alternative to: Trello, Asana, Notion

Explore

Security & Privacy21.0k

GPL-3.0Free

KeePassXC

Offline password manager that stores credentials in an encrypted local database file

desktope2e-encryptedcross-platform

Alternative to: LastPass, 1Password

Explore

E-Commerce21.0k

BSD-3Freemium

Saleor

GraphQL-first headless e-commerce platform built with Python and Django for custom storefronts

self-hostedpythonapi-first

Alternative to: Shopify, Salesforce Commerce Cloud

Explore

DevOps & Infrastructure20.5k

Apache-2.0Free

Cilium

eBPF-based networking, observability, and security for Kubernetes and cloud-native workloads

golangkubernetesdocker

Alternative to: Amazon Web Services

Explore

Communication18.5k

Apache-2.0Free

ntfy

Simple HTTP-based push notification service for sending alerts to phones and desktops

self-hostedgolangdocker

Alternative to: Slack

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Media & Entertainment13.5k

AGPL-3.0Free

FreeTube

Privacy-focused desktop YouTube player with no ads, tracking, or account required

electrondesktopprivacy-focused

Alternative to: Spotify

Explore

Security & Privacy11.5k

BSD-3Freemium+2

NetBird

Peer-to-peer VPN that creates secure private networks using WireGuard with zero configuration

self-hostedgolangdocker

Alternative to: NordVPN, ExpressVPN

Explore

Game Development10.5k

GPL-3.0Free+1

RetroArch

Frontend for emulators, game engines, and media players with a unified interface

cross-platformdesktopplugin-system

Alternative to: Steam, Epic Games Store

Explore

Cloud Storage8.0k

Apache-2.0Free

Kopia

Cross-platform backup tool with fast incremental backups, encryption, and compression to cloud storage

cligolange2e-encrypted

Alternative to: Google Drive, Dropbox

Explore

DevOps & Infrastructure7.4k

Apache-2.0Free

Concourse

Container-based continuous integration system with declarative pipelines and reproducible builds

self-hosteddockergolang

Alternative to: GitHub Actions, CircleCI

Explore

Communication7.2k

AGPL-3.0Free+1

SimpleX Chat

Privacy-first messaging platform without user identifiers, using double-ratchet end-to-end encryption

e2e-encryptedprivacy-focuseddecentralized

Alternative to: WhatsApp, Telegram

Explore

Content Management6.2k

GPL-3.0Free

Publii

Desktop-based static site CMS with visual editor and one-click publishing to hosting services

desktopelectron

Alternative to: Squarespace, Wix

Explore

Finance & Accounting5.3k

BSD-3Free

Ledger CLI

Command-line double-entry accounting system that reads plain-text journal files for financial tracking

clioffline-capablelightweight

Alternative to: QuickBooks

Explore

Productivity5.3k

AGPL-3.0Freemium+2

Standard Notes

End-to-end encrypted note-taking app with longevity focus, extensions, and cross-platform sync

e2e-encryptedcross-platformprivacy-focused

Alternative to: Evernote

Explore

Content Management4.8k

GPL-3.0Free

Joomla

Flexible content management system for building websites, intranets, and online applications

self-hostedextensibleplugin-system

Alternative to: Squarespace, Wix

Explore

Analytics & BI4.6k

otherFreemium

GoatCounter

Lightweight web analytics platform that provides meaningful statistics without tracking personal data

self-hostedgolangprivacy-focused

Alternative to: Google Analytics

Explore

Game Development4.6k

BSD-3Free

Panda3D

3D game engine with Python and C++ support designed for rapid game prototyping

cross-platformpythondesktop

Alternative to: Unity

Explore

Databases4.5k

otherFreemium

ReadySet

Transparent SQL caching engine that sits between your app and PostgreSQL or MySQL

rustcachepostgresql

Alternative to: Amazon RDS, Oracle Database

Explore

Analytics & BI4.3k

MITFree

Ackee

Self-hosted Node.js analytics tool focused on privacy with a minimal beautiful dashboard

self-hosteddockerprivacy-focused

Alternative to: Google Analytics

Explore

Analytics & BI4.3k

MITFree

Ackee

Self-hosted, privacy-focused web analytics tool with a beautiful dashboard

nodejsself-hostedprivacy-focused

Alternative to: Google Analytics

Explore

DevOps & Infrastructure4.3k

Apache-2.0Free

Woodpecker CI

Community fork of Drone CI offering simple container-based continuous integration pipelines

self-hosteddockergolang

Alternative to: GitHub Actions, CircleCI

Explore

E-Commerce3.8k

otherFree

Attendize

Open-source event ticketing and management platform for selling tickets and managing attendees

self-hosteddockerweb-based

Alternative to: Shopify

Explore

Content Management3.8k

otherFreemium

Statamic

Laravel-based flat-file CMS with powerful content management, live preview, and form builder

self-hostedweb-basedextensible

Alternative to: Contentful, WordPress.com

Explore

DevOps & Infrastructure3.6k

AGPL-3.0Free

MinIO Operator

Kubernetes operator for deploying and managing MinIO object storage clusters

kubernetesgolangdocker

Alternative to: Amazon Web Services

Explore

Cloud Storage3.5k

MITFree

Lychee

Self-hosted photo management application with album organization, sharing, and beautiful gallery views

self-hosteddockerweb-based

Alternative to: Google Drive, iCloud

Explore

Game Development2.4k

otherFree

Teeworlds

Free online multiplayer 2D shooter game with a retro aesthetic and fast-paced gameplay

cross-platformdesktoplightweight

Alternative to: Steam

Explore

Analytics & BI1.8k

MITFreemium

Mixpost

Self-hosted social media management tool for scheduling and publishing content across platforms

self-hosteddockerweb-based

Alternative to: Mixpanel

Explore

DevOps & Infrastructure1.6k

GPL-3.0Freemium

Checkmk

Infrastructure and application monitoring tool with auto-discovery and comprehensive alerting capabilities

self-hosteddockerenterprise

Alternative to: Datadog, New Relic, PagerDuty

Explore

E-Commerce1.4k

Apache-2.0Free

Lemon Squeezy Wedges

Open source React UI component library designed for building beautiful e-commerce interfaces

typescriptweb-based

Alternative to: Gumroad

Explore

E-Commerce1.1k

AGPL-3.0Free

Open Food Network

Online marketplace platform connecting local food producers with consumers and food hubs

self-hosteddockerweb-based

Alternative to: Shopify

Explore

Media & Entertainment1.0k

GPL-3.0Free

Hydrogen

Advanced drum machine and pattern-based sequencer for creating rhythm tracks and beats

desktopcross-platform

Alternative to: Ableton Live, Logic Pro

Explore

Education800

AGPL-3.0Free

Frappe LMS

Open source learning management system built on Frappe framework for creating online courses

self-hostedpythondocker

Alternative to: Teachable, Thinkific, Udemy

Explore

Analytics & BI500

MPL-2.0Free

Glean

Privacy-respecting telemetry SDK by Mozilla for collecting product usage metrics

rustkotlinswift

Alternative to: Google Analytics, Mixpanel

Explore

Education300

AGPL-3.0Free

OpenStax Tutor

Adaptive courseware platform using machine learning to personalize student learning paths

web-basedtypescript

Alternative to: Coursera, Udemy

Explore

E-Commerce200

MITFreemium

commercetools Frontend

Merchant center application toolkit for building custom administration interfaces for commerce platforms

typescriptapi-first

Alternative to: Salesforce Commerce Cloud

Explore

Analytics & BI

MITFree

Analytics

Lightweight pluggable analytics library for tracking page views and events across platforms

self-hosteddockerprivacy-focused

Alternative to: Segment

Explore

Development Tools57.0k

Apache-2.0Free

Alacritty

GPU-accelerated terminal emulator focused on simplicity and performance

rustdesktopcross-platform

Alternative to: Visual Studio

Explore

Design & Graphics50.5k

Apache-2.0Free

Material Design Icons

Comprehensive icon library following Material Design guidelines with thousands of icons

web-basedextensible

Alternative to: Figma

Explore

Cloud Storage49.0k

AGPL-3.0Free

MinIO

High-performance S3-compatible object storage server for large-scale data infrastructure

self-hostedgolangdocker

Alternative to: Box

Explore

Finance & Accounting38.0k

LGPL-3.0Freemium

Odoo Accounting

Integrated accounting module within Odoo ERP for invoicing, bank sync, and financial reporting

self-hostedpythondocker

Alternative to: QuickBooks, Xero, Sage

Explore

Development Tools34.0k

Apache-2.0Free

Lapce

Lightning-fast code editor written in Rust with native GUI and remote development support

rustdesktoplightweight

Alternative to: Sublime Text, Visual Studio

Explore

Communication33.0k

AGPL-3.0Freemium

Cal.com

Scheduling infrastructure for individuals and businesses with calendar sync and booking pages

self-hostedweb-basedapi-first

Alternative to: Zoom

Explore

DevOps & Infrastructure32.0k

Apache-2.0Freemium

Drone CI

Container-native continuous integration and delivery platform using pipeline-as-code configuration

self-hosteddockergolang

Alternative to: GitHub Actions, CircleCI

Explore

DevOps & Infrastructure32.0k

Apache-2.0Free

Gitness

Open-source developer platform with source control and CI/CD pipelines built-in

golangdockerself-hosted

Alternative to: GitHub Actions, CircleCI

Explore

Design & Graphics31.0k

AGPL-3.0Free

Upscayl

AI-powered image upscaler that enhances and enlarges photos while preserving quality and details

ai-powereddesktopelectron

Alternative to: Adobe Photoshop, Adobe Lightroom

Explore

Databases29.0k

Apache-2.0Freemium

InfluxDB

Time series database optimized for high-write and query loads for metrics and IoT data

self-hostedgolangdocker

Alternative to: Databricks, Snowflake

Explore

Media & Entertainment29.0k

GPL-3.0Free

mpv

Lightweight media player focused on quality and performance with minimal interface overhead

desktopcross-platformcli

Alternative to: Spotify

Explore

DevOps & Infrastructure25.0k

BSD-3Free

Nginx

High-performance web server, reverse proxy, and load balancer handling millions of concurrent connections

self-hosteddockerenterprise

Alternative to: Amazon Web Services, Microsoft Azure

Explore

DevOps & Infrastructure24.0k

MITFreemium

GitLab CE

Complete DevOps platform providing Git repository management, CI/CD pipelines, and project planning

self-hosteddockerenterprise

Alternative to: GitHub Actions, CircleCI

Explore

Productivity24.0k

AGPL-3.0Freemium

Twenty

Modern open-source CRM platform designed as a Salesforce alternative with a beautiful UI

self-hostedtypescriptdocker

Alternative to: Asana, Monday.com

Explore

Game Development23.0k

GPL-3.0Free+1

Mindustry

Factory-building tower defense game with resource management and multiplayer support

javacross-platformdesktop

Alternative to: Steam

Explore

DevOps & Infrastructure19.5k

otherFreemium

SigNoz

Full-stack observability platform combining metrics, traces, and logs in a single interface

self-hosteddockertypescript

Alternative to: Datadog, New Relic, Splunk

Explore

Game Development18.2k

MITFree+1

Cocos2d-x

Cross-platform game framework for building 2D games, interactive apps, and visual demonstrations

cross-platformmobile-friendlydesktop

Alternative to: Unity, Construct

Explore

Content Management17.8k

MITFree

Decap CMS

Git-based content management system providing a friendly editing interface for static sites

git-basedweb-basedmarkdown

Alternative to: Contentful, Sanity

Explore

Communication15.6k

GPL-3.0Free

Mailspring

Beautiful, fast desktop email client with unified inbox, snoozing, and link tracking

electrondesktopcross-platform

Alternative to: Mailchimp

Explore

Game Development14.8k

GPL-3.0Free

OpenRA

Game engine for classic real-time strategy games like Command & Conquer and Red Alert

desktopcross-platform

Alternative to: Steam

Explore

Analytics & BI13.0k

AGPL-3.0Freemium

OpenObserve

Cloud-native observability platform for logs, metrics, and traces with petabyte-scale capacity

rustdockerself-hosted

Alternative to: Splunk, Datadog

Explore

Media & Entertainment12.5k

AGPL-3.0Free

Nuclear

Free desktop music streaming player that finds music from free sources across the internet

electrondesktopcross-platform

Alternative to: Spotify

Explore

Media & Entertainment12.4k

GPL-3.0Free

MuseScore

Music notation software for creating, playing, and printing sheet music compositions

desktopcross-platformplugin-system

Alternative to: Logic Pro

Explore

Media & Entertainment10.8k

MITFree

Sonic Pi

Code-based music creation tool that lets you compose and perform music through live coding

desktopcross-platformextensible

Alternative to: Ableton Live

Explore

Game Development10.5k

otherFree

Cataclysm: Dark Days Ahead

Turn-based survival game set in a post-apocalyptic world with deep crafting and exploration

cross-platformdesktopextensible

Alternative to: Steam

Explore

Security & Privacy10.0k

GPL-3.0Free+1

WireGuard

Fast modern VPN tunnel using state-of-the-art cryptography with minimal attack surface

self-hostedprivacy-focusedlightweight

Alternative to: NordVPN, ExpressVPN

Explore

Databases8.8k

Apache-2.0Free

Apache Cassandra

Distributed wide-column store database designed for high availability and linear scalability

self-hosteddockerenterprise

Alternative to: Amazon DynamoDB, Azure Cosmos DB

Explore

Media & Entertainment8.2k

GPL-3.0Free

Olive

Non-linear video editor aiming for professional quality with a node-based compositor

desktopcross-platform

Alternative to: Adobe Premiere Pro

Explore

Media & Entertainment7.2k

GPL-3.0Free

Audiobookshelf

Self-hosted audiobook and podcast server with mobile apps and progress tracking

nodejsself-hostedaudiobooks

Alternative to: Spotify

Explore

Communication6.2k

GPL-3.0Freemium+2

Tuta

Encrypted email service with end-to-end encryption, calendar, and contacts for secure communication

e2e-encryptedprivacy-focusedweb-based

Alternative to: Mailchimp

Explore

Databases5.7k

GPL-3.0Free

MariaDB

Community-developed relational database forked from MySQL with enhanced performance and new features

self-hosteddockerenterprise

Alternative to: Oracle Database, Microsoft SQL Server

Explore

E-Commerce5.1k

BSD-3Free

Solidus

Composable open source e-commerce framework for Ruby on Rails with customizable business logic

self-hostedapi-firstextensible

Alternative to: Shopify, Magento Commerce

Explore

Design & Graphics4.7k

BSD-3Free

OpenToonz

Professional 2D animation production software used in anime and film studio pipelines

cross-platformdesktop

Alternative to: Adobe After Effects

Explore

E-Commerce4.6k

Apache-2.0Free

Kill Bill

Open source subscription billing and payment platform handling invoicing, payments, and entitlements

self-hostedjavaapi-first

Alternative to: Stripe Billing, Chargebee, Recurly

Explore

Databases4.6k

GPL-3.0Free

MySQL

Widely-used open-source relational database management system for web applications and data storage

self-hosteddockerenterprise

Alternative to: Oracle Database, Microsoft SQL Server, Amazon RDS

Explore

Analytics & BI4.3k

MITFree

Ackee

Self-hosted, privacy-focused website analytics tool without cookies or tracking

self-hostedprivacy-focuseddocker

Alternative to: Google Analytics

Explore

E-Commerce4.2k

GPL-3.0Free

EverShop

Node.js-based ecommerce platform with modular architecture and GraphQL API

self-hosteddockertypescript

Alternative to: Shopify

Explore

Game Development3.9k

MITFree

OGRE

Scene-oriented 3D rendering engine written in C++ for building graphics-intensive applications

cross-platformdesktopextensible

Alternative to: Unreal Engine

Explore

Productivity3.8k

GPL-3.0Free

Tasks.org

Open-source task management app for Android with CalDAV sync, subtasks, and location reminders

mobile-friendlyoffline-capable

Alternative to: Todoist

Explore

Cloud Storage3.1k

MITFree

Diun

Docker image update notifier that alerts when new versions of container images are available

golangdockerself-hosted

Alternative to: Dropbox

Explore

Education2.2k

GPL-3.0Free

Freeplane

Mind mapping and knowledge management application for organizing ideas and creating visual diagrams

desktopjavacross-platform

Alternative to: Kahoot!

Explore

Development Tools1.9k

LGPL-3.0Free

Kate

Advanced text editor by KDE with syntax highlighting, code folding, and terminal integration

desktopplugin-systemextensible

Alternative to: Sublime Text

Explore

Finance & Accounting1.9k

GPL-3.0Free

Money Manager Ex

Cross-platform personal finance application for managing finances, tracking expenses, and budgeting

desktopcross-platformoffline-capable

Alternative to: Mint, QuickBooks

Explore

Cloud Storage1.7k

AGPL-3.0Freemium

Pydio Cells

Enterprise document sharing and collaboration platform with fine-grained access controls

self-hostedgolangdocker

Alternative to: Google Drive, Box

Explore

Content Management1.2k

otherFreemium

October CMS

Laravel-based CMS with clean code philosophy, modular design, and simple back-end interface

self-hostedplugin-systemextensible

Alternative to: Squarespace, WordPress.com

Explore

Communication1.2k

AGPL-3.0Free+1

Revolt

User-first chat platform built with modern web technologies as an alternative to Discord

rusttypescriptself-hosted

Alternative to: Discord, Slack

Explore

Security & Privacy1.1k

otherFree

OpenLDAP

Open source implementation of the Lightweight Directory Access Protocol for centralized user management

self-hostedenterprisecli

Alternative to: Okta, Auth0

Explore

E-Commerce900

LGPL-3.0Free

Thelia

E-commerce solution built on Symfony framework for creating professional online stores

self-hostedweb-basedplugin-system

Alternative to: Shopify, Magento Commerce

Explore

Analytics & BI800

AGPL-3.0Freemium

Aptabase

Privacy-first analytics platform for desktop and mobile apps with simple SDKs

self-hosteddockerprivacy-focused

Alternative to: Mixpanel, Amplitude

Explore

Finance & Accounting500

MITFree

Economizzer

Simple and open-source personal finance manager for tracking income and expenses

self-hosteddockerweb-based

Alternative to: Mint

Explore

Education500

GPL-3.0Free

Gibbon

School management platform covering timetabling, attendance, reporting, and student information systems

self-hostedweb-based

Alternative to: Google Classroom, Blackboard

Explore

Education300

GPL-3.0Free

H5P

Interactive content creation framework for building quizzes, presentations, and educational activities

web-basedplugin-systemextensible

Alternative to: Kahoot!, Google Classroom

Explore

Education150

AGPL-3.0Free

Open edX DevStack

Development environment for the Open edX platform enabling rapid LMS customization

self-hosteddockerpython

Alternative to: Blackboard, Canvas LMS Cloud

Explore

Finance & Accounting100

otherFree

OpenCBS

Banking and microfinance management platform for loan tracking, savings, and financial operations

self-hostedenterprise

Alternative to: NetSuite

Explore

Content Management57.0k

MITFree

Docusaurus

Documentation website generator by Meta with versioning, search, and localization built in

typescriptmarkdownweb-based

Alternative to: HubSpot CMS, Webflow

Explore

Media & Entertainment46.5k

GPL-3.0Free

FFmpeg

Command-line multimedia framework for recording, converting, and streaming audio and video files

clicross-platformextensible

Alternative to: Adobe Premiere Pro, Adobe Audition

Explore

Analytics & BI39.0k

AGPL-3.0Freemium

Metabase

Business intelligence tool that lets anyone ask questions and learn from data without SQL

self-hosteddockerjava

Alternative to: Tableau, Power BI, Looker

Explore

Security & Privacy39.0k

AGPL-3.0Free

Vaultwarden

Lightweight self-hosted server compatible with the Bitwarden client apps and browser extensions

self-hosteddockere2e-encrypted

Alternative to: LastPass, 1Password

Explore

Databases37.5k

Apache-2.0Freemium

TiDB

Distributed SQL database with horizontal scalability, MySQL compatibility, and hybrid transactional workloads

self-hosteddockerenterprise

Alternative to: Oracle Database, Microsoft SQL Server, Amazon RDS

Explore

Security & Privacy31.0k

otherFreemium

HashiCorp Vault

Secrets management tool for securely storing and controlling access to tokens, passwords, and certificates

self-hostedgolangdocker

Alternative to: 1Password, LastPass

Explore

Content Management29.0k

otherFreemium

Outline

Beautiful wiki and knowledge base for teams with real-time collaboration and Markdown support

self-hostedtypescriptdocker

Alternative to: Confluence, Notion

Explore

Databases28.0k

otherFreemium

SurrealDB

Multi-model database supporting SQL, graph, document, and key-value data in one platform

self-hostedrustdocker

Alternative to: MongoDB Atlas, Firebase

Explore

DevOps & Infrastructure23.5k

MITFree

Jenkins

Extensible automation server for building, testing, and deploying software with plugin ecosystem

self-hosteddockerjava

Alternative to: GitHub Actions, CircleCI

Explore

Databases18.8k

Apache-2.0Free

Vitess

Database clustering system for horizontal scaling of MySQL through sharding and connection pooling

self-hostedgolangdocker

Alternative to: Amazon RDS, Oracle Database

Explore

Security & Privacy17.8k

AGPL-3.0Freemium

Teleport

Secure infrastructure access platform providing SSH, Kubernetes, and database authentication with audit logging

self-hostedgolangdocker

Alternative to: Okta, Auth0

Explore

E-Commerce15.0k

MITFree

Bagisto

Laravel-based e-commerce framework with built-in multi-warehouse, multi-currency, and localization support

self-hostedweb-baseddocker

Alternative to: Shopify, Magento Commerce

Explore

Development Tools14.8k

GPL-3.0Free

Sourcetrail

Cross-platform source code explorer with interactive dependency graphs for C, C++, Java, and Python

desktopcross-platform

Alternative to: IntelliJ IDEA

Explore

Development Tools11.2k

MITFree

GDB Dashboard

Modular visual interface for GDB debugger with real-time variable and register display

clipythonlightweight

Alternative to: Visual Studio

Explore

Design & Graphics11.0k

GPL-3.0Free

Shotcut

Cross-platform video editor supporting hundreds of audio and video formats with native timeline editing

cross-platformdesktop

Alternative to: Adobe Premiere Pro

Explore

Security & Privacy10.5k

Apache-2.0Freemium

Prowler

Cloud security assessment tool for AWS, Azure, and GCP compliance and best practices

pythonclicloud-security

Alternative to: CrowdStrike, Splunk Security

Explore

Productivity8.5k

AGPL-3.0Free

Hoarder

Self-hosted bookmark and read-later manager with AI-powered automatic tagging

typescriptself-hostedai-tagging

Alternative to: Todoist, Evernote

Explore

Analytics & BI8.0k

AGPL-3.0Free

Quickwit

Sub-second search engine on cloud storage for log management and distributed tracing

rustdockerkubernetes

Alternative to: Splunk

Explore

Game Development7.8k

Apache-2.0Free

Open 3D Engine

AAA-capable 3D game engine for building high-fidelity games and real-time simulations

desktopcross-platformenterprise

Alternative to: Unreal Engine, CryEngine, Amazon Lumberyard

Explore

Content Management7.5k

MITFreemium

Builder.io

Visual headless CMS and page builder with drag-and-drop editing for any tech stack

typescriptvisual-editorheadless

Alternative to: Contentful, Webflow

Explore

Content Management7.4k

MITFreemium

Webiny

Serverless headless CMS built for AWS with page builder, form builder, and file manager

self-hostedtypescriptapi-first

Alternative to: Contentful, Adobe Experience Manager

Explore

Databases7.2k

Apache-2.0Freemium

RisingWave

Distributed SQL streaming database for real-time event-driven applications

ruststreamingpostgresql-compatible

Alternative to: Snowflake, Databricks

Explore

E-Commerce6.5k

MITFree

BTCPay Server

Self-hosted cryptocurrency payment processor for accepting Bitcoin and altcoin payments directly

self-hosteddockere2e-encrypted

Alternative to: Stripe Billing, Square

Explore

DevOps & Infrastructure6.2k

Apache-2.0Free

Longhorn

Cloud-native distributed block storage system for Kubernetes with backup and disaster recovery

golangkubernetesdocker

Alternative to: Amazon Web Services

Explore

Education5.8k

GPL-3.0Free

Moodle

World-leading open source learning management system for educators to create online courses

self-hostedweb-basedplugin-system

Alternative to: Blackboard, Canvas LMS Cloud, Moodle Cloud

Explore

Education5.7k

AGPL-3.0Free

Canvas LMS

Modern learning management system used by schools and universities for course delivery

self-hostedweb-basedenterprise

Alternative to: Blackboard, Canvas LMS Cloud

Explore

Productivity5.7k

AGPL-3.0Freemium

CryptPad

End-to-end encrypted collaboration suite with documents, spreadsheets, presentations, and kanban boards

self-hostede2e-encryptedweb-based

Alternative to: Google Docs

Explore

Education5.5k

Apache-2.0Free

Oppia

Interactive tutoring platform where anyone can create and share engaging educational lessons

web-basedpythoncollaborative

Alternative to: Duolingo, Kahoot!

Explore

Databases5.4k

Apache-2.0Free

JanusGraph

Scalable distributed graph database optimized for storing billions of vertices and edges

javaself-hosteddocker

Alternative to: MongoDB Atlas, Amazon DynamoDB

Explore

Game Development5.1k

MITFree+2

Ren'Py

Visual novel engine for creating interactive storytelling games using simple Python-like scripting

cross-platformpythondesktop

Alternative to: RPG Maker

Explore

Design & Graphics3.4k

GPL-3.0Free

Kdenlive

Multi-track video editor with timeline-based editing, effects, transitions, and keyframe animation support

cross-platformdesktopextensible

Alternative to: Adobe Premiere Pro

Explore

Analytics & BI2.9k

Apache-2.0Free

Shynet

Modern privacy-friendly web analytics tool that works without cookies or JavaScript trackers

self-hosteddockerpython

Alternative to: Google Analytics

Explore

Game Development2.6k

MITFree

Kaboom.js

JavaScript game programming library for making browser games with simple and fun APIs

web-basedtypescriptlightweight

Alternative to: Construct, GameMaker

Explore

Game Development2.0k

MITFree

Stride

Open source C# game engine with advanced graphics and a visual editor for 3D games

desktopcross-platform

Alternative to: Unity, Unreal Engine

Explore

Communication1.5k

GPL-3.0Free+1

Session

Anonymous messenger requiring no phone number with decentralized network and end-to-end encryption

e2e-encryptedprivacy-focuseddecentralized

Alternative to: WhatsApp, Telegram

Explore

Design & Graphics1.1k

GPL-3.0Free

Figma Linux

Unofficial native Figma desktop application built specifically for the Linux operating system

desktopelectron

Alternative to: Figma

Explore

Communication800

Apache-2.0Free

SchildiChat

Matrix-based messenger with end-to-end encryption and a familiar messaging experience

matrixe2e-encryptedprivacy-focused

Alternative to: WhatsApp, Telegram

Explore

Cloud Storage600

AGPL-3.0Freemium+2

Filen

Zero-knowledge end-to-end encrypted cloud storage with file sync, sharing, and collaboration

e2e-encryptedcross-platformprivacy-focused

Alternative to: Google Drive, Dropbox, MEGA

Explore

Education600

GPL-3.0Free

ILIAS

Web-based learning management system for universities offering courses, tests, and collaboration tools

self-hostedweb-basedenterprise

Alternative to: Blackboard, Canvas LMS Cloud

Explore

Finance & Accounting500

GPL-3.0Free

BudgetZero

Privacy-focused, zero-based budgeting app that runs entirely in your browser

web-basedprivacy-focusedoffline-capable

Alternative to: Mint

Explore

Education200

AGPL-3.0Free

Lernanta (P2PU)

Peer-to-peer university platform for creating and facilitating community learning circles

web-basedpythoncollaborative

Alternative to: Coursera

Explore

Education100

AGPL-3.0Free

Open edX Notes

Annotation and note-taking API service for the Open edX online learning platform

web-basedpython

Alternative to: Coursera

Explore

Development Tools165.0k

MITFree

Visual Studio Code

Lightweight but powerful source code editor with built-in debugging, Git, and extension support

electrontypescriptextensible

Alternative to: Sublime Text, WebStorm

Explore

DevOps & Infrastructure112.0k

Apache-2.0Free

Kubernetes

Container orchestration platform for automating deployment, scaling, and management of applications

dockerkubernetesenterprise

Alternative to: Amazon Web Services, Microsoft Azure, Google Cloud Platform

Explore

Databases50.0k

AGPL-3.0Freemium

NocoDB

Open-source Airtable alternative that turns any database into a smart spreadsheet interface

self-hostedtypescriptdocker

Alternative to: DataGrip

Explore

Productivity46.0k

AGPL-3.0Free+1

Joplin

Note-taking and to-do application with synchronization, encryption, and markdown support

e2e-encryptedcross-platformmarkdown

Alternative to: Evernote

Explore

Game Development37.5k

MITFree

Phaser

Fast and lightweight HTML5 game framework for creating browser-based 2D games with JavaScript

web-basedtypescriptlightweight

Alternative to: Construct, GameMaker

Explore

Communication26.5k

AGPL-3.0Free+1

Signal

Private messenger with end-to-end encryption for secure text, voice, and video communication

e2e-encryptedprivacy-focusedmobile-friendly

Alternative to: WhatsApp, Telegram

Explore

E-Commerce26.0k

MITFree

Medusa

Headless commerce platform with modular architecture for building custom digital storefronts

self-hostedtypescriptapi-first

Alternative to: Shopify, BigCommerce

Explore

Analytics & BI16.5k

MITFreemium

Airbyte

Data integration platform with 300+ connectors for syncing data from APIs and databases

self-hosteddockerpython

Alternative to: Segment

Explore

Databases14.5k

Apache-2.0Free

FoundationDB

Distributed database with multi-model data support and ACID transactions at massive scale

self-hosteddockerenterprise

Alternative to: Amazon DynamoDB, Azure Cosmos DB

Explore

Security & Privacy13.5k

GPL-3.0Free

Lynis

Security auditing tool for Unix-based systems performing compliance testing and hardening scans

clilightweight

Alternative to: CrowdStrike, Norton

Explore

Design & Graphics12.3k

Apache-2.0Free

ImageMagick

Command-line image processing suite for creating, editing, converting, and compositing bitmap images

clicross-platform

Alternative to: Adobe Photoshop

Explore

Finance & Accounting11.5k

MITFree

Krayin CRM

Laravel-based open-source CRM for managing leads, contacts, and sales pipeline

self-hosteddockerweb-based

Alternative to: QuickBooks, FreshBooks

Explore

E-Commerce11.5k

otherFree

Magento Open Source

Enterprise-grade e-commerce platform with extensive catalog management and customization capabilities

self-hosteddockerenterprise

Alternative to: Shopify, BigCommerce, Magento Commerce

Explore

Communication11.3k

Apache-2.0Free+2

Element

Secure messaging app built on the Matrix protocol with end-to-end encryption and federation

e2e-encrypteddecentralizedfederated

Alternative to: Slack, Discord, Microsoft Teams

Explore

Security & Privacy10.8k

GPL-3.0Freemium+1

OpenVPN

Full-featured SSL VPN solution for secure point-to-point and site-to-site network connections

self-hostedcross-platformcli

Alternative to: NordVPN, ExpressVPN

Explore

Content Management9.2k

MITFree

KeystoneJS

Headless CMS and GraphQL API framework for Node.js with customizable admin UI

self-hostedapi-firsttypescript

Alternative to: Contentful, Sanity

Explore

Communication9.1k

GPL-3.0Free

mailcow

Dockerized email server suite with webmail, antispam, antivirus, and administration interface

self-hosteddockerweb-based

Alternative to: Mailchimp

Explore

Analytics & BI8.3k

Apache-2.0Freemium

Highlight.io

Full-stack monitoring platform combining session replay, error tracking, and logging for web apps

self-hosteddockertypescript

Alternative to: FullStory, Hotjar

Explore

Security & Privacy6.8k

Apache-2.0Free

step-ca

Private certificate authority for securing internal services with automated TLS certificates

golangself-hosteddocker

Alternative to: Okta, Auth0

Explore

Databases6.7k

otherFree

SQLite

Self-contained serverless SQL database engine embedded directly into applications without configuration

lightweightcross-platformoffline-capable

Alternative to: Oracle Database, Microsoft SQL Server

Explore

E-Commerce6.2k

BSD-3Free

Oscar Commerce

Domain-driven Django e-commerce framework for building flexible and customizable online shops

self-hostedpythonextensible

Alternative to: Shopify, Magento Commerce

Explore

Game Development5.8k

otherFreemium

Flax Engine

Multi-platform 3D game engine with C# scripting, visual scripting, and a professional editor

desktopcross-platformextensible

Alternative to: Unity, Unreal Engine

Explore

Finance & Accounting5.4k

GPL-3.0Free

Dolibarr

Modular ERP and CRM software for managing business operations, invoices, and inventory

self-hosteddockerweb-based

Alternative to: SAP, Sage, NetSuite

Explore

Design & Graphics4.7k

GPL-3.0Free

Natron

Node-based compositing application for visual effects and motion graphics post-production work

cross-platformdesktopplugin-system

Alternative to: Adobe After Effects

Explore

Productivity4.5k

AGPL-3.0Freemium

Leantime

Strategic project management system with goal tracking, to-dos, and timeline visualization

self-hostedweb-baseddocker

Alternative to: Asana, Monday.com

Explore

Communication3.0k

AGPL-3.0Free

MiroTalk

Peer-to-peer video calling platform with screen sharing, file transfer, and no signup needed

self-hostedweb-basedreal-time

Alternative to: Zoom, Skype

Explore

Security & Privacy2.4k

GPL-3.0Free

Security Onion

Linux distribution for threat hunting, network security monitoring, and enterprise log management

self-hosteddockerenterprise

Alternative to: Splunk Security, CrowdStrike

Explore

Education1.0k

LGPL-3.0Free

XWiki

Enterprise wiki platform for creating collaborative knowledge bases, documentation, and team workspaces

self-hostedjavaextensible

Alternative to: Google Classroom

Explore

Design & Graphics800

GPL-3.0Free

enve

Open-source 2D animation software combining raster and vector graphics with audio support

desktoplightweight

Alternative to: Adobe After Effects

Explore

Content Management700

AGPL-3.0Free

Booktype

Collaborative book publishing platform for creating, editing, and publishing books online

self-hostedpythoncollaborative

Alternative to: WordPress.com, Contentful

Explore

Education600

GPL-3.0Free

OpenBoard

Interactive whiteboard application designed for use in schools and educational presentations

desktopcross-platform

Alternative to: Google Classroom, Blackboard

Explore

Analytics & BI300

MITFree

Keen Analysis

Open-source analytics SDK for building custom analytics dashboards and data exploration tools

typescriptapi-firstweb-based

Alternative to: Amplitude, Mixpanel

Explore

Education300

Apache-2.0Free

Open edX Mobile

Native Android application for accessing Open edX courses and learning content on mobile

mobile-friendly

Alternative to: Coursera, Udemy

Explore

Databases42.0k

MITFree

PocketBase

Single-file backend with embedded SQLite database, realtime subscriptions, and built-in auth

self-hostedgolanglightweight

Alternative to: Firebase

Explore

Analytics & BI38.0k

Apache-2.0Freemium

ClickHouse Analytics

Column-oriented database for real-time analytics and OLAP queries at petabyte scale

self-hosteddockerenterprise

Alternative to: Snowflake, Databricks

Explore

Development Tools34.0k

Apache-2.0Freemium

Insomnia

Collaborative API design and testing client for REST, GraphQL, gRPC, and SOAP requests

desktopapi-firstcross-platform

Alternative to: Postman

Explore

Databases26.5k

otherFree

MongoDB Community

Document-oriented NoSQL database with flexible schemas, indexing, and aggregation for modern apps

self-hosteddockerenterprise

Alternative to: MongoDB Atlas, Amazon DynamoDB, Azure Cosmos DB

Explore

Development Tools25.0k

GPL-3.0Free

kitty

Fast GPU-based terminal emulator with advanced features like image display and tiling

pythondesktopextensible

Alternative to: Visual Studio

Explore

Development Tools25.0k

AGPL-3.0Free

Wiki.js

Powerful wiki engine with markdown support, visual editor, and multi-language content management

self-hostedweb-baseddocker

Alternative to: Confluence

Explore

Databases23.5k

AGPL-3.0Freemium

TDengine

High-performance time-series database optimized for IoT and industrial data applications

self-hosteddockerlightweight

Alternative to: Snowflake, MongoDB Atlas

Explore

Analytics & BI23.5k

MITFree

Umami

Simple fast privacy-focused web analytics alternative that respects visitor data and avoids cookies

self-hosteddockerprivacy-focused

Alternative to: Google Analytics, Mixpanel

Explore

Development Tools21.5k

MPL-2.0Free

DB Browser for SQLite

Visual tool for creating, designing, and editing SQLite database files with spreadsheet-like interface

cross-platformdesktoplightweight

Alternative to: DataGrip

Explore

E-Commerce21.0k

GPL-3.0Free

ERPNext POS

Full-featured point-of-sale system within the ERPNext ERP for retail and restaurant operations

self-hostedpythondocker

Alternative to: Shopify, Square

Explore

Development Tools20.0k

otherFree

Eclipse Theia

Extensible cloud and desktop IDE framework built with modern web technologies and VS Code extensions

web-basedtypescriptextensible

Alternative to: Visual Studio, WebStorm

Explore

Development Tools19.6k

MITFree

WeKan

Open-source kanban board application for organizing work with cards, lists, and swimlanes

self-hostedweb-baseddocker

Alternative to: Jira

Explore

Game Development12.7k

GPL-3.0Free

openage

Free cross-platform RTS game engine reimplementing Age of Empires with modern technology

pythondesktopcross-platform

Alternative to: Steam

Explore

Security & Privacy12.3k

GPL-3.0Free

Fail2Ban

Intrusion prevention framework that bans IP addresses conducting brute-force login attempts

self-hostedpythoncli

Alternative to: CrowdStrike, Norton

Explore

Development Tools12.0k

MITFree

mise

Polyglot dev tool version manager and task runner replacing asdf, nvm, pyenv, and more

rustclicross-platform

Alternative to: Visual Studio

Explore

Content Management12.0k

Apache-2.0Freemium

TinaCMS

Git-backed headless CMS with visual editing and real-time content preview for developers

git-basedweb-basedtypescript

Alternative to: Contentful, Sanity

Explore

Productivity11.5k

MITFree+1

Super Productivity

Advanced to-do list app with time tracking, Jira and GitHub integration, and break reminders

cross-platformdesktopelectron

Alternative to: Todoist, Asana

Explore

Game Development11.5k

GPL-3.0Free

Tiled

Flexible level editor for creating tile-based game maps with support for multiple formats

desktopcross-platformextensible

Alternative to: RPG Maker, GameMaker

Explore

Security & Privacy9.0k

Apache-2.0Freemium

ZITADEL

Cloud-native identity management platform with built-in multi-tenancy and OIDC/SAML support

self-hostedgolangdocker

Alternative to: Okta, Auth0

Explore

E-Commerce8.1k

otherFree

PrestaShop

Feature-rich e-commerce solution for creating and managing online stores with themes and modules

self-hosteddockerweb-based

Alternative to: Shopify, Magento Commerce

Explore

DevOps & Infrastructure6.5k

Apache-2.0Free

Flux CD

GitOps toolkit for Kubernetes that synchronizes cluster state with Git repository declarations

kubernetesgolanggit-based

Alternative to: GitHub Actions, CircleCI

Explore

Analytics & BI5.5k

AGPL-3.0Freemium

Countly

Product analytics platform tracking user journeys, sessions, and engagement across web and mobile

self-hosteddockerenterprise

Alternative to: Mixpanel, Amplitude

Explore

Development Tools5.3k

GPL-3.0Free

Redmine

Flexible project management web application with issue tracking, wiki, and time tracking features

self-hostedweb-basedenterprise

Alternative to: Jira

Explore

Analytics & BI5.1k

AGPL-3.0Freemium

RudderStack

Customer data platform for collecting, routing, and transforming event data across tools

self-hostedgolangdocker

Alternative to: Segment

Explore

Development Tools5.0k

MITFree

Lite XL

Lightweight and extensible text editor written in Lua with minimal resource consumption

desktoplightweightextensible

Alternative to: Sublime Text

Explore

Design & Graphics4.4k

GPL-3.0Free

OpenShot

Easy-to-use video editor with drag-and-drop support, clip resizing, and animation framework

cross-platformdesktoppython

Alternative to: Adobe Premiere Pro

Explore

Security & Privacy3.4k

BSD-3Free

OPNsense

FreeBSD-based firewall and routing platform with traffic shaping, VPN, and IDS features

self-hostedplugin-systemweb-based

Alternative to: Norton, McAfee

Explore

Productivity3.1k

otherFree

EtherCalc

Web-based collaborative spreadsheet allowing multiple users to edit simultaneously in real time

self-hostedweb-basedcollaborative

Alternative to: Google Sheets

Explore

Design & Graphics2.8k

GPL-3.0Free

RawTherapee

Cross-platform raw image processing program with advanced color handling and batch processing capabilities

cross-platformdesktop

Alternative to: Adobe Lightroom

Explore

Finance & Accounting2.8k

AGPL-3.0Freemium

Rotki

Open-source portfolio tracker and accounting tool for crypto assets and traditional finance

pythondesktopprivacy-focused

Alternative to: Mint

Explore

E-Commerce2.4k

MITFreemium

Sharetribe

Marketplace platform for creating peer-to-peer rental, service, and product marketplaces

self-hosteddockerweb-based

Alternative to: Shopify

Explore

Communication2.2k

GPL-3.0Free

Dino

Modern XMPP chat client for the desktop with end-to-end encryption support

xmppe2e-encrypteddesktop

Alternative to: WhatsApp, Telegram

Explore

Cloud Storage2.0k

AGPL-3.0Freemium

Storj

Decentralized cloud storage network with end-to-end encryption and distributed global infrastructure

decentralizedgolange2e-encrypted

Alternative to: Google Drive, Dropbox

Explore

Content Management1.1k

GPL-3.0Free

TYPO3

Enterprise-class CMS for large-scale websites with multi-site management and multilingual support

self-hostedenterpriseextensible

Alternative to: Adobe Experience Manager, Sitecore, Kentico

Explore

Game Development900

GPL-3.0Free+1

EasyRPG Player

Free interpreter for RPG Maker 2000/2003 games, bringing classic RPGs to modern platforms

cross-platformdesktop

Alternative to: RPG Maker

Explore

Productivity

otherFreemium+1

Obsidian

Private knowledge base with markdown files, graph view, and powerful linking and plugin system

desktopmarkdownplugin-system

Alternative to: Notion, Evernote

Explore

Databases75.0k

Apache-2.0Freemium

Supabase

Open-source backend-as-a-service with PostgreSQL database, authentication, storage, and realtime subscriptions

self-hostedapi-firstdocker

Alternative to: Firebase, Amazon RDS

Explore

Content Management64.0k

MITFreemium

Strapi

Headless CMS with customizable API, content types, and admin panel for developers and editors

self-hostedapi-firstdocker

Alternative to: Contentful, Sanity

Explore

DevOps & Infrastructure51.5k

MITFreemium

Traefik

Cloud-native reverse proxy and load balancer with automatic service discovery and SSL certificates

self-hosteddockergolang

Alternative to: Amazon Web Services, Microsoft Azure

Explore

Productivity48.0k

GPL-3.0Free

Stirling PDF

Self-hosted PDF manipulation tool for merging, splitting, converting, and editing PDF files

self-hosteddockerweb-based

Alternative to: Microsoft Office

Explore

Communication41.0k

MITFreemium+3

Rocket.Chat

Team communication hub with messaging, video calls, file sharing, and omnichannel support

self-hostedenterprisedocker

Alternative to: Slack, Microsoft Teams

Explore

Databases26.8k

Apache-2.0Free

RethinkDB

Document database with real-time push architecture for building reactive web and mobile applications

self-hosteddockerreal-time

Alternative to: MongoDB Atlas, Firebase

Explore

Security & Privacy24.0k

BSD-3Free

Headscale

Self-hosted coordination server for WireGuard-based mesh networking across distributed devices

self-hostedgolangdocker

Alternative to: NordVPN, ExpressVPN

Explore

DevOps & Infrastructure23.5k

MPL-2.0Free

OpenTofu

Open source infrastructure-as-code tool for provisioning and managing cloud resources declaratively

cligolangenterprise

Alternative to: Terraform Cloud

Explore

E-Commerce20.0k

GPL-3.0Free

ERPNext E-commerce

Full-featured ERP system with integrated e-commerce module for inventory and order management

self-hostedpythondocker

Alternative to: Salesforce Commerce Cloud, BigCommerce

Explore

DevOps & Infrastructure18.0k

MPL-2.0Free

Vector

High-performance observability data pipeline for collecting, transforming, and routing logs and metrics

clirustdocker

Alternative to: Splunk, Datadog

Explore

Productivity17.0k

otherFreemium

Huly

All-in-one project management platform with issues, documents, HR tools, and team collaboration

self-hostedweb-basedcollaborative

Alternative to: Asana, Monday.com, Notion

Explore

Productivity16.0k

MITFree

Luckysheet

Web-based collaborative spreadsheet with Excel-compatible features and real-time editing support

web-basedcollaborativetypescript

Alternative to: Google Sheets

Explore

Databases15.0k

Apache-2.0Freemium

Neon

Serverless PostgreSQL with autoscaling, branching, and bottomless storage for modern applications

self-hostedrustdocker

Alternative to: Amazon RDS, Azure Cosmos DB

Explore

E-Commerce13.0k

Apache-2.0Free

Hyperswitch

Open source payment orchestrator that routes transactions across multiple payment processors

self-hostedrustapi-first

Alternative to: Stripe Billing, Square

Explore

Development Tools13.0k

LGPL-3.0Free

Nix

Purely functional package manager for reproducible builds and declarative system configuration

clicross-platformdesktop

Alternative to: Visual Studio

Explore

E-Commerce13.0k

BSD-3Free

Spree Commerce

Modular headless e-commerce platform built with Ruby on Rails for custom online stores

self-hostedapi-firstdocker

Alternative to: Shopify, Magento Commerce

Explore

Content Management12.0k

Apache-2.0Freemium

TinaCMS

Git-backed headless CMS with visual editing for React-based websites

typescriptreactgit-backed

Alternative to: Contentful, Sanity

Explore

Security & Privacy10.8k

GPL-3.0Free

OpenSnitch

GNU/Linux application firewall that monitors and controls outbound network connections per process

desktoppythonprivacy-focused

Alternative to: Norton, McAfee

Explore

Security & Privacy9.5k

AGPL-3.0Freemium

Portmaster

Application firewall that monitors network activity and enforces per-app privacy settings

desktopgolangprivacy-focused

Alternative to: Norton, McAfee

Explore

E-Commerce9.3k

otherFree

nopCommerce

ASP.NET Core e-commerce platform with multi-store support, catalog management, and marketing tools

self-hostedenterpriseextensible

Alternative to: Shopify, Magento Commerce

Explore

Finance & Accounting8.2k

GPL-3.0Freemium

Akaunting

Online accounting software for small businesses with invoicing, expenses, and financial reporting

self-hosteddockerweb-based

Alternative to: QuickBooks, FreshBooks, Wave Accounting

Explore

Databases8.0k

Apache-2.0Freemium

Databend

Cloud-native lakehouse built in Rust for real-time analytics on object storage

rustcloud-nativelakehouse

Alternative to: Snowflake, Databricks

Explore

Analytics & BI7.4k

otherFreemium

Graylog

Centralized log management platform for collecting, indexing, and analyzing machine data

self-hosteddockerenterprise

Alternative to: Splunk, Datadog

Explore

Education7.2k

AGPL-3.0Free

Open edX

Scalable online learning platform powering MOOCs with interactive courses and assessments

self-hostedpythondocker

Alternative to: Coursera, Udemy, Teachable

Explore

Education7.0k

AGPL-3.0Free

Exercism

Free coding practice and mentorship platform with exercises in 70+ programming languages

web-basedclicollaborative

Alternative to: Coursera, Udemy

Explore

Security & Privacy6.8k

Apache-2.0Freemium+2

Firezone

Self-hosted VPN server and firewall with a web-based management interface for WireGuard tunnels

self-hosteddockerweb-based

Alternative to: NordVPN, ExpressVPN

Explore

Databases6.3k

Apache-2.0Free

Apache CouchDB

Document-oriented NoSQL database with HTTP API, multi-master replication, and offline-first support

self-hosteddockerapi-first

Alternative to: MongoDB Atlas, Azure Cosmos DB

Explore

Game Development6.1k

MITFree+1

Cocos Creator

Cross-platform game development tool for creating 2D and 3D mobile and web games

cross-platformdesktopweb-based

Alternative to: Unity, Construct

Explore

Productivity5.6k

AGPL-3.0Free+1

TriliumNext Notes

Hierarchical note-taking app with rich editing, encryption, and self-hosting support

typescriptself-hostedhierarchical

Alternative to: Notion, Evernote

Explore

Productivity5.2k

AGPL-3.0Free

HedgeDoc

Collaborative markdown editor for creating notes, presentations, and documentation in real time

self-hostedweb-basedcollaborative

Alternative to: Google Docs, Notion

Explore

Communication3.0k

GPL-3.0Free

WeeChat

Fast and extensible IRC client with multi-protocol support and scripting capabilities

cliplugin-systemextensible

Alternative to: Slack, Discord

Explore

Design & Graphics2.8k

GPL-3.0Free

Scribus

Desktop publishing application for creating professional page layouts, brochures, and print-ready documents

cross-platformdesktop

Alternative to: Adobe InDesign

Explore

Finance & Accounting2.5k

AGPL-3.0Freemium

Bigcapital

Online accounting and inventory management software for small and medium businesses

self-hosteddockerweb-based

Alternative to: QuickBooks, Xero, FreshBooks

Explore

DevOps & Infrastructure1.8k

MITFree

Buildkite Agent

Fast and reliable open-source CI/CD agent that runs build jobs on your own infrastructure

golangclidocker

Alternative to: CircleCI, GitHub Actions

Explore

Media & Entertainment1.1k

LGPL-3.0Free

Pitivi

Intuitive video editor for Linux with a clean interface and non-linear timeline editing

desktoppython

Alternative to: Adobe Premiere Pro, Camtasia

Explore

Content Management1.0k

GPL-3.0Free

Plone

Enterprise CMS built on Python with strong security, workflow management, and extensibility

self-hostedpythonenterprise

Alternative to: Adobe Experience Manager, Sitecore

Explore

Education900

LGPL-3.0Free

Greenlight

Simple front-end interface for BigBlueButton web conferencing used in online classrooms

self-hosteddockerweb-based

Alternative to: Google Classroom

Explore

Content Management800

MPL-2.0Free

ProcessWire

PHP content management system and framework with powerful API and jQuery-inspired selectors

self-hostedextensibleapi-first

Alternative to: WordPress.com, Wix

Explore

Education500

AGPL-3.0Free

OpenStax

Free peer-reviewed textbook platform providing open educational resources for college courses

web-based

Alternative to: Coursera, Udemy

Explore

Design & Graphics

otherFree

Lunacy

Free graphic design software with built-in assets, AI tools, and real-time collaboration

cross-platformdesktop

Alternative to: Figma, Sketch

Explore

Cloud Storage66.0k

MPL-2.0Free

Syncthing

Continuous peer-to-peer file synchronization program that keeps files in sync across devices

decentralizedgolangcross-platform

Alternative to: Dropbox, Google Drive, OneDrive

Explore

Analytics & BI63.0k

Apache-2.0Free

Apache Superset

Modern data exploration and visualization platform for creating interactive dashboards from SQL queries

self-hosteddockerpython

Alternative to: Tableau, Power BI, Looker

Explore

Content Management48.0k

MITFreemium

Ghost

Professional publishing platform for blogs, newsletters, and paid content with membership features

self-hosteddockerweb-based

Alternative to: Squarespace, WordPress.com, HubSpot CMS

Explore

Design & Graphics33.0k

MPL-2.0Free

Penpot

Open-source design and prototyping platform for cross-domain teams with SVG-native workflow

self-hostedweb-basedcollaborative

Alternative to: Figma

Explore

Development Tools28.0k

MITFree

Bruno

Offline-first API client that stores collections directly in your filesystem using plain text

desktopapi-firstoffline-capable

Alternative to: Postman

Explore

Security & Privacy22.0k

Apache-2.0Free

Authelia

Self-hosted authentication and authorization server providing single sign-on and two-factor access control

self-hosteddockergolang

Alternative to: Okta, Auth0

Explore

Finance & Accounting21.0k

GPL-3.0Freemium

ERPNext Accounting

Full-featured open-source ERP with accounting, invoicing, inventory, and payroll modules

self-hostedpythondocker

Alternative to: Sage, NetSuite

Explore

Content Management19.5k

BSD-3Free

MkDocs

Fast and simple static site generator geared towards building project documentation

pythonclimarkdown

Alternative to: Confluence, Contentful

Explore

Development Tools18.5k

MITFree

GitUI

Blazing fast terminal-based Git client written in Rust with keyboard-driven interface

clirustlightweight

Alternative to: GitHub

Explore

DevOps & Infrastructure18.0k

Apache-2.0Free

Argo CD

Declarative GitOps continuous delivery tool for Kubernetes application deployment and lifecycle management

kubernetesgolangweb-based

Alternative to: GitHub Actions, CircleCI

Explore

Development Tools18.0k

MITFree

WezTerm

GPU-accelerated terminal emulator and multiplexer with Lua configuration and ligature support

rustdesktopcross-platform

Alternative to: Visual Studio

Explore

Cloud Storage16.5k

AGPL-3.0Freemium+3

Ente

End-to-end encrypted photo storage and sharing service with cross-platform sync and search

e2e-encryptedself-hostedmobile-friendly

Alternative to: Google Drive, iCloud

Explore

Databases13.5k

AGPL-3.0Freemium

ScyllaDB

High-performance NoSQL database compatible with Cassandra offering lower latency and higher throughput

self-hosteddockerenterprise

Alternative to: Amazon DynamoDB, Azure Cosmos DB

Explore

Content Management13.5k

MITFree

VitePress

Vite and Vue powered static site generator for building fast documentation websites

typescriptmarkdownlightweight

Alternative to: Contentful, Squarespace

Explore

Media & Entertainment13.0k

AGPL-3.0Free

PeerTube

Decentralized video hosting platform using peer-to-peer technology for federated video sharing

self-hostedfederateddocker

Alternative to: Spotify

Explore

E-Commerce12.2k

GPL-3.0Free

Mailchimp Open Commerce

API-first headless commerce platform for building custom e-commerce experiences and storefronts

self-hosteddockerapi-first

Alternative to: Shopify

Explore

E-Commerce12.2k

GPL-3.0Free

Reaction Commerce

Real-time reactive commerce platform built on Node.js for creating custom shopping experiences

self-hosteddockerapi-first

Alternative to: Shopify, BigCommerce

Explore

Security & Privacy11.0k

GPL-3.0Free

Wazuh

Unified security monitoring platform for threat detection, integrity checking, and incident response

self-hosteddockerenterprise

Alternative to: CrowdStrike, Splunk Security

Explore

Development Tools9.5k

GPL-3.0Freemium

OpenProject

Web-based project management software with Gantt charts, agile boards, and time tracking

self-hostedenterprisedocker

Alternative to: Jira, Confluence

Explore

Productivity8.6k

MITFree

Kanboard

Minimalistic Kanban project management software focused on simplicity and clear visual workflow

self-hostedweb-baseddocker

Alternative to: Trello

Explore

Productivity8.2k

AGPL-3.0Free

Planka

Real-time kanban board for workgroups with card attachments, labels, and member management

self-hostedweb-baseddocker

Alternative to: Trello

Explore

Productivity8.1k

BSD-3Free

TiddlyWiki

Non-linear personal web notebook for capturing, organizing, and sharing complex information

web-basedoffline-capableextensible

Alternative to: Notion, Evernote

Explore

Communication7.2k

GPL-3.0Free

Mautic

Marketing automation platform with email campaigns, landing pages, and lead management tools

self-hostedweb-baseddocker

Alternative to: Mailchimp

Explore

E-Commerce5.8k

MITFree

Vendure

Headless e-commerce framework built on TypeScript and Node.js with GraphQL API

self-hostedtypescriptapi-first

Alternative to: Shopify, Salesforce Commerce Cloud

Explore

Communication4.5k

GPL-3.0Freemium+2

Proton Mail

End-to-end encrypted email service based in Switzerland with zero-access encryption architecture

e2e-encryptedprivacy-focusedweb-based

Alternative to: Mailchimp

Explore

Analytics & BI4.4k

MITFreemium

Evidence

Code-driven business intelligence tool that generates reports and dashboards from SQL and Markdown

web-basedmarkdowntypescript

Alternative to: Tableau, Power BI, Looker

Explore

Productivity3.6k

AGPL-3.0Freemium

erxes

Open-source experience operating system for CRM, marketing automation, and helpdesk

self-hosteddockertypescript

Alternative to: Asana, Monday.com

Explore

Content Management3.2k

MITFreemium

Microweber

Drag-and-drop website builder and CMS with built-in e-commerce and blogging features

self-hostedno-codeweb-based

Alternative to: Wix, Squarespace

Explore

Media & Entertainment600

GPL-3.0Free

Flowblade

Multitrack non-linear video editor for Linux with a film-style insert editing workflow

desktoppython

Alternative to: Adobe Premiere Pro

Explore

Media & Entertainment300

GPL-3.0Free+1

Stremio

Modern media center with add-on system for streaming video content from multiple sources

rustcross-platformstreaming

Alternative to: Spotify

Explore

Education100

GPL-3.0Free

LibreTexts

Collaborative platform hosting free open-access textbooks and educational resources for students

web-based

Alternative to: Coursera, Udemy

Explore

Education100

AGPL-3.0Free

Tutor (Open edX)

Docker-based deployment tool for installing and managing Open edX learning platform instances

web-basedmobile-friendly

Alternative to: Coursera, Moodle Cloud

Explore

Finance & Accounting

GPL-3.0Free

BudgetZero

Zero-based budgeting web application for planning and tracking personal spending and savings

web-based

Alternative to: Mint

Explore

DevOps & Infrastructure65.0k

AGPL-3.0Freemium

Grafana

Observability platform for querying, visualizing, and alerting on metrics from multiple data sources

self-hosteddockerweb-based

Alternative to: Datadog, New Relic, Splunk

Explore

Development Tools28.0k

otherFreemium

Outline

Fast and collaborative knowledge base for teams with markdown editing and nested documents

self-hostedweb-basedcollaborative

Alternative to: Confluence

Explore

Analytics & BI26.5k

BSD-3Free

Redash

Data visualization tool for querying databases and creating collaborative shareable dashboards

self-hosteddockerpython

Alternative to: Tableau, Looker

Explore

Development Tools24.0k

MITFreemium

GitLab

Complete DevOps platform with Git repository management, CI/CD pipelines, and issue tracking

self-hosteddockerenterprise

Alternative to: GitHub, Bitbucket

Explore

Security & Privacy24.0k

Apache-2.0Free

Trivy

Comprehensive vulnerability scanner for containers, file systems, Git repositories, and cloud infrastructure

cligolangdocker

Alternative to: CrowdStrike, Splunk Security

Explore

Analytics & BI17.5k

Apache-2.0Freemium

Prefect

Workflow orchestration framework for building reliable data pipelines with Python

pythonself-hosteddocker

Alternative to: Databricks

Explore

Security & Privacy17.0k

MPL-2.0Free

SOPS

Secrets management tool for encrypting files with AWS KMS, GCP KMS, Azure Key Vault, and PGP

golangclicross-platform

Alternative to: 1Password, LastPass

Explore

Communication15.5k

MITFree

Flarum

Simple and beautiful forum software with a fast, extensible, and mobile-friendly design

self-hostedweb-basedextensible

Alternative to: Slack, Discord

Explore

Content Management14.6k

MITFree

Grav

Flat-file CMS with no database requirement, built on modern technologies with fast performance

self-hostedmarkdownlightweight

Alternative to: Squarespace, Wix

Explore

Communication12.2k

AGPL-3.0Free

Matrix Synapse

Reference homeserver for the Matrix decentralized communication protocol with federation support

self-hostedfederateddocker

Alternative to: Slack, Discord

Explore

Media & Entertainment8.1k

Apache-2.0Free

Mopidy

Extensible music server that plays music from local disk, Spotify, SoundCloud, and more

pythonextensibleplugin-system

Alternative to: Spotify

Explore

E-Commerce7.4k

GPL-3.0Free

OpenCart

PHP-based online store management system with an extensive marketplace of extensions and themes

self-hostedweb-basedextensible

Alternative to: Shopify, Magento Commerce

Explore

Communication5.4k

AGPL-3.0Free+1

Spacebar

Self-hosted, compatible chat platform that works with existing Discord clients

self-hostedtypescriptcompatible-api

Alternative to: Discord

Explore

Security & Privacy5.0k

Apache-2.0Free

pfSense

Open-source firewall and router distribution based on FreeBSD with a web-based management interface

self-hostedenterprise

Alternative to: Norton, McAfee

Explore

E-Commerce5.0k

BSD-3Free

Solidus

Flexible, open-source ecommerce platform built with Ruby on Rails for custom stores

self-hostedextensibleenterprise

Alternative to: Shopify, BigCommerce

Explore

Security & Privacy5.0k

GPL-3.0Free

Suricata

High-performance network intrusion detection and prevention engine with protocol inspection capabilities

self-hostedcli

Alternative to: CrowdStrike, Splunk Security

Explore

Game Development4.7k

GPL-3.0Free

SuperTuxKart

Free 3D kart racing game with online multiplayer and a variety of characters and tracks

cross-platformdesktop

Alternative to: Steam

Explore

Analytics & BI4.3k

MITFreemium

Jitsu

Open source data ingestion engine for collecting events and sending them to data warehouses

self-hosteddockertypescript

Alternative to: Segment

Explore

DevOps & Infrastructure4.2k

AGPL-3.0Free

Grafana Mimir

Horizontally scalable long-term storage for Prometheus metrics with multi-tenancy

golangdockerself-hosted

Alternative to: Datadog, New Relic

Explore

DevOps & Infrastructure3.8k

AGPL-3.0Free

Zabbix

Enterprise-class monitoring solution for networks, servers, cloud services, and application performance

self-hosteddockerenterprise

Alternative to: Datadog, New Relic, PagerDuty

Explore

Finance & Accounting3.3k

AGPL-3.0Free

Kimai

Web-based time-tracking application for freelancers and teams with invoicing and reporting

self-hosteddockerweb-based

Alternative to: FreshBooks

Explore

Design & Graphics3.2k

GPL-3.0Free

Quant-UX

Prototyping and user testing tool for designing and validating user interfaces

self-hostedweb-basedcollaborative

Alternative to: Figma, Sketch

Explore

E-Commerce1.1k

AGPL-3.0Free

Open Food Network

Platform for local food enterprises to sell produce directly to communities

self-hosteddockerweb-based

Alternative to: Shopify

Explore

Analytics & BI800

AGPL-3.0Freemium

Swetrix

Privacy-focused web analytics service with real-time dashboards and no cookie tracking

self-hosteddockerprivacy-focused

Alternative to: Google Analytics

Explore

Finance & Accounting500

AGPL-3.0Free

Open Bank Project

Open source API platform for banks providing standardized access to financial transaction data

self-hostedapi-firstenterprise

Alternative to: Stripe Atlas

Explore

Cloud Storage500

GPL-3.0Freemium

Stingle Photos

Encrypted photo and video backup app with secure sharing and cross-device synchronization

e2e-encryptedmobile-friendlyprivacy-focused

Alternative to: Google Drive, iCloud

Explore

Media & Entertainment350

GPL-3.0Free

Vocal

Podcast client for the GNOME desktop with streaming, downloading, and library management

desktoplightweight

Alternative to: Spotify

Explore

E-Commerce200

otherFree

thirty bees

Community-driven e-commerce platform forked from PrestaShop focused on performance and stability

self-hostedweb-based

Alternative to: Shopify, Magento Commerce

Explore

Education200

GPL-3.0Free

Xerte

Browser-based authoring toolkit for creating interactive learning materials and e-learning content

web-basedself-hosted

Alternative to: Teachable, Thinkific

Explore

Education100

GPL-3.0Free

Learning Locker

Learning record store for collecting and analyzing xAPI learning data from educational activities

web-basedlightweight

Alternative to: Kahoot!

Explore

Finance & Accounting58.0k

AGPL-3.0Free

AppFlowy Finance

Open source Notion alternative with workspace features adaptable for financial planning and tracking

rustdesktopoffline-capable

Alternative to: Zoho Books

Explore

DevOps & Infrastructure24.0k

Apache-2.0Free

Podman

Daemonless container engine for developing, managing, and running OCI containers without root access

cligolangdocker

Alternative to: Docker Desktop

Explore

Cloud Storage23.0k

Apache-2.0Free

SeaweedFS

Fast distributed storage system for billions of files with S3 API and cloud tiering

self-hostedgolangdocker

Alternative to: Box

Explore

Analytics & BI22.0k

MITFreemium

PostHog

All-in-one product analytics platform with session replay, feature flags, and A/B testing

self-hosteddockerapi-first

Alternative to: Mixpanel, Amplitude, Hotjar, Heap, FullStory

Explore

Analytics & BI21.0k

AGPL-3.0Freemium

Plausible Analytics

Lightweight privacy-friendly web analytics tool with a simple dashboard and no cookies

self-hosteddockerprivacy-focused

Alternative to: Google Analytics

Explore

Content Management19.5k

GPL-3.0Free

WordPress

Most popular content management system powering websites, blogs, and online stores worldwide

self-hostedplugin-systemextensible

Alternative to: Squarespace, Wix, WordPress.com

Explore

Databases17.8k

Apache-2.0Freemium

TimescaleDB

PostgreSQL extension for time-series data with automatic partitioning and optimized query performance

self-hosteddockerenterprise

Alternative to: Databricks, Snowflake

Explore

DevOps & Infrastructure15.0k

otherFreemium

HashiCorp Nomad

Flexible workload orchestrator for deploying containers, binaries, and virtual machines at scale

self-hostedgolangdocker

Alternative to: Amazon Web Services, Microsoft Azure, Google Cloud Platform

Explore

Databases13.0k

MITFree

libSQL

Open-source fork of SQLite with server mode, replication, and edge-friendly distributed architecture

rustlightweight

Alternative to: Firebase, Amazon RDS

Explore

Communication8.8k

MITFreemium

UVdesk

Customer support helpdesk system with ticket management, knowledge base, and multi-channel support

self-hostedweb-baseddocker

Alternative to: Zendesk

Explore

Productivity7.5k

Apache-2.0Freemium

Grist

Modern relational spreadsheet combining the flexibility of a spreadsheet with database power

self-hostedweb-baseddocker

Alternative to: Airtable, Google Sheets

Explore

Design & Graphics4.2k

GPL-3.0Free

Storyboarder

Storyboarding application for visualizing stories with drawing tools and shot generation features

desktopcross-platformelectron

Alternative to: Adobe Premiere Pro

Explore

Content Management3.8k

MITFree

Pico CMS

Lightweight flat-file CMS that converts Markdown files into a fully functional website

self-hostedlightweightmarkdown

Alternative to: Squarespace, Wix

Explore

Communication3.3k

GPL-3.0Free

osTicket

Support ticket system that routes and manages customer inquiries from email, web, and phone

self-hostedweb-based

Alternative to: Zendesk

Explore

Productivity3.2k

AGPL-3.0Free

Kimai

Web-based multi-user time tracking application with invoicing and project management

self-hosteddockerweb-based

Alternative to: Asana, Monday.com

Explore

Design & Graphics1.8k

GPL-3.0Free

Pencil2D

Simple hand-drawn 2D animation software supporting both bitmap and vector drawing workflows

cross-platformdesktoplightweight

Alternative to: Adobe After Effects

Explore

Finance & Accounting600

MITFree

SolidInvoice

Self-hosted invoicing application for creating professional invoices and managing client payments

self-hosteddockerweb-based

Alternative to: FreshBooks, Wave Accounting

Explore

Education300

MITFree

Davis

Simple CardDAV and CalDAV server for contacts and calendar management

self-hostedweb-basedlightweight

Alternative to: Kahoot!

Explore

E-Commerce200

MITFree

LiteCart

Lightweight e-commerce shopping cart platform designed for simplicity and fast setup

self-hostedlightweight

Alternative to: Shopify

Explore

Development Tools53.0k

MITFree

Lazygit

Simple terminal UI for Git commands with interactive staging, branch management, and log browsing

cligolanglightweight

Alternative to: GitHub

Explore

DevOps & Infrastructure31.5k

otherFreemium

Portainer

Web-based container management interface for Docker, Kubernetes, and Swarm environments

self-hosteddockerweb-based

Alternative to: Docker Desktop

Explore

Content Management27.0k

MITFreemium

Payload CMS

TypeScript-first headless CMS with powerful admin panel, access control, and API generation

self-hostedapi-firsttypescript

Alternative to: Contentful, Sanity, Adobe Experience Manager

Explore

DevOps & Infrastructure20.5k

Apache-2.0Free

Jaeger

Distributed tracing platform for monitoring and troubleshooting microservice-based architectures

self-hosteddockergolang

Alternative to: Datadog, New Relic

Explore

Finance & Accounting20.0k

GPL-3.0Free

ERPNext Finance

Full-featured ERP system with accounting, HR, inventory, and supply chain management modules

self-hostedpythondocker

Alternative to: SAP, NetSuite, Sage

Explore

Databases14.5k

Apache-2.0Freemium

QuestDB

High-performance time-series database with SQL support optimized for fast ingestion and queries

self-hosteddockerjava

Alternative to: Snowflake, Databricks

Explore

E-Commerce11.5k

MITFree

Next.js Commerce

Vercel starter kit for building high-performance e-commerce storefronts with Next.js framework

typescriptweb-basedapi-first

Alternative to: Shopify

Explore

E-Commerce9.4k

GPL-3.0Free

WooCommerce

WordPress plugin that transforms websites into fully featured online stores with payment processing

self-hostedplugin-systemextensible

Alternative to: Shopify, BigCommerce, Magento Commerce

Explore

DevOps & Infrastructure8.6k

Apache-2.0Free

Tekton

Kubernetes-native CI/CD building blocks for creating container-based pipelines

kubernetesgolangdocker

Alternative to: GitHub Actions, CircleCI

Explore

Game Development8.2k

GPL-3.0Free

Heroic Games Launcher

Native game launcher for Epic, GOG, and Amazon Games on Linux and macOS

desktopelectroncross-platform

Alternative to: Epic Games Store, Steam

Explore

Design & Graphics7.2k

MITFree

Pixelorama

Pixel art creation tool with animation timeline, onion skinning, and tilemap editing support

cross-platformdesktoplightweight

Alternative to: Adobe Photoshop

Explore

Development Tools7.2k

MPL-2.0Freemium

Taiga

Agile project management platform for startups and developers with Scrum and Kanban support

self-hostedweb-baseddocker

Alternative to: Jira

Explore

Cloud Storage4.8k

MPL-2.0Free

Send

Encrypted file sharing service with automatic expiration and password protection for uploads

self-hostedweb-basede2e-encrypted

Alternative to: Dropbox

Explore

Design & Graphics1.2k

GPL-3.0Free

PhotoGIMP

GIMP patch that reorganizes the interface to mimic Adobe Photoshop layout and shortcuts

plugin-systemdesktop

Alternative to: Adobe Photoshop

Explore

Communication940

MITFree

Galene

Lightweight videoconference server optimized for large groups with low bandwidth requirements

self-hostedgolanglightweight

Alternative to: Zoom

Explore

Analytics & BI900

Apache-2.0Free

Offen

Fair web analytics tool that lets users access and delete their own browsing data

self-hosteddockerprivacy-focused

Alternative to: Google Analytics

Explore

Education800

GPL-3.0Freemium

Tutor LMS

WordPress LMS plugin for creating and selling online courses with quizzes and certificates

self-hosteddockerpython

Alternative to: Teachable, Thinkific, Udemy

Explore

Analytics & BI700

Apache-2.0Freemium

Litlyx

Lightweight developer-first analytics platform for tracking events and user behavior on websites

self-hosteddockertypescript

Alternative to: Google Analytics, Mixpanel

Explore

Content Management700

BSD-3Free

Silverstripe

PHP-based CMS and framework for building websites and web applications with flexible content models

self-hostedextensibleenterprise

Alternative to: Squarespace, Kentico

Explore

Content Management39.5k

MITFree

Hexo

Fast and simple blog framework powered by Node.js with one-command deployment to various hosts

climarkdownplugin-system

Alternative to: Squarespace, WordPress.com

Explore

Communication23.5k

Apache-2.0Free

Jitsi Meet

Secure video conferencing solution with screen sharing, chat, and recording without account required

self-hostedweb-basede2e-encrypted

Alternative to: Zoom, Microsoft Teams, Skype

Explore

Content Management18.5k

BSD-3Free

Wagtail

Django-based CMS with streamlined content editing, powerful search, and flexible page models

self-hostedpythonextensible

Alternative to: Adobe Experience Manager, Sitecore

Explore

Databases17.5k

BSD-3Free

Valkey

Community-driven fork of Redis providing an open-source in-memory key-value data store

self-hosteddockerlightweight

Alternative to: Valkey Enterprise

Explore

Communication15.5k

AGPL-3.0Free

Listmonk

High-performance self-hosted newsletter and mailing list manager with analytics and templating

self-hostedgolangdocker

Alternative to: Mailchimp

Explore

Databases13.5k

GPL-3.0Freemium

Neo4j

Graph database platform for connected data with Cypher query language and visual exploration

self-hosteddockerenterprise

Alternative to: Azure Cosmos DB, Amazon DynamoDB

Explore

Security & Privacy7.5k

Apache-2.0Free

Falco

Cloud-native runtime security tool that detects anomalous activity in containers and Kubernetes

self-hostedkubernetesdocker

Alternative to: CrowdStrike, Splunk Security

Explore

Education4.5k

AGPL-3.0Freemium

Leantime

Project management system designed for non-project managers with task boards and goal tracking

self-hostedweb-baseddocker

Alternative to: Google Classroom

Explore

Communication4.5k

AGPL-3.0Freemium

Zammad

Web-based helpdesk and customer support system with email, chat, and social media integration

self-hostedweb-baseddocker

Alternative to: Zendesk, Intercom

Explore

Cloud Storage4.0k

AGPL-3.0Free

Garage

Lightweight S3-compatible distributed object storage designed for self-hosting and edge deployments

self-hostedrustdocker

Alternative to: Box

Explore

Content Management3.6k

Apache-2.0Free

Frontity

React framework for building WordPress themes with server-side rendering

reacttypescriptwordpress

Alternative to: WordPress.com, Squarespace

Explore

Security & Privacy2.7k

AGPL-3.0Freemium+3

Padloc

Minimalist password manager with cross-platform support and end-to-end encrypted cloud sync

e2e-encryptedcross-platformself-hosted

Alternative to: LastPass, 1Password

Explore

Media & Entertainment2.0k

GPL-3.0Free

nomacs

Free, lightweight image viewer supporting multiple platforms with basic editing features

desktoplightweightcross-platform

Alternative to: Adobe Lightroom

Explore

Design & Graphics300

GPL-3.0Free

PhotoFlare

Quick and simple cross-platform image editor for basic photo editing and graphic design

desktoplightweightcross-platform

Alternative to: Adobe Photoshop

Explore

Content Management77.0k

Apache-2.0Free

Hugo

Fastest static site generator written in Go for building blazing-fast websites from markdown

golangclimarkdown

Alternative to: Squarespace, Wix, Webflow

Explore

Finance & Accounting33.0k

AGPL-3.0Free

Maybe

Personal finance and wealth management app for tracking net worth, investments, and spending

self-hosteddockertypescript

Alternative to: Mint

Explore

Productivity27.5k

AGPL-3.0Free

Trilium Notes

Hierarchical note-taking application with rich text editing, scripting, and knowledge graph visualization

self-hostedweb-baseddesktop

Alternative to: Evernote, Notion

Explore

Analytics & BI20.0k

GPL-3.0Free

Matomo

Privacy-focused web analytics platform providing detailed visitor insights without third-party data sharing

self-hosteddockerweb-based

Alternative to: Google Analytics

Explore

Content Management17.2k

MITFree

Eleventy

Simple and flexible static site generator that works with multiple template languages

clilightweightmarkdown

Alternative to: Squarespace, Webflow

Explore

E-Commerce8.0k

MITFreemium

Sylius

Symfony-based e-commerce framework designed for high customization and enterprise-grade online stores

self-hostedapi-firstdocker

Alternative to: Shopify, Salesforce Commerce Cloud

Explore

E-Commerce7.0k

AGPL-3.0Freemium

Lago

Open source metering and usage-based billing platform for SaaS and API monetization

self-hosteddockerapi-first

Alternative to: Stripe Billing, Chargebee

Explore

Communication600

AGPL-3.0Free

Spacebar

Self-hostable Discord-compatible chat platform with federation and full API compatibility

self-hostedtypescriptdocker

Alternative to: Discord

Explore

Databases47.0k

MITFreemium

Meilisearch

Lightning-fast search engine with typo tolerance, filtering, and instant search-as-you-type results

self-hostedrustdocker

Alternative to: Firebase

Explore

E-Commerce38.0k

LGPL-3.0Freemium

Odoo E-commerce

Integrated e-commerce module within the Odoo ERP suite for online selling and inventory

self-hostedpythondocker

Alternative to: Shopify, Salesforce Commerce Cloud

Explore

DevOps & Infrastructure24.0k

AGPL-3.0Free

Grafana Loki

Horizontally scalable log aggregation system designed to index metadata rather than full log content

self-hostedgolangdocker

Alternative to: Splunk, Datadog

Explore

Finance & Accounting1.4k

AGPL-3.0Free

Keila

Self-hosted email newsletter tool for managing subscribers and sending marketing campaigns

self-hosteddocker

Alternative to: Zoho Books

Explore

Education100

GPL-3.0Free

OpenExam

Online examination system for universities with secure proctoring and grading features

self-hostedweb-based

Alternative to: Blackboard, Canvas LMS Cloud

Explore

Databases70.5k

otherFreemium

Elasticsearch

Distributed search and analytics engine for full-text search, logging, and real-time data analysis

self-hosteddockerenterprise

Alternative to: Snowflake, Databricks

Explore

Finance & Accounting8.3k

otherFreemium

Invoice Ninja

Invoicing and payment platform for freelancers and businesses with time tracking and proposals

self-hosteddockerweb-based

Alternative to: FreshBooks, QuickBooks

Explore

Content Management5.2k

MITFreemium

Sanity Studio

Customizable content editing environment for structured content with real-time collaboration and API

web-basedapi-firsttypescript

Alternative to: Contentful, Adobe Experience Manager

Explore

Analytics & BI72.0k

GPL-3.0Freemium

Netdata

Real-time infrastructure monitoring with thousands of metrics, zero configuration, and stunning dashboards

self-hostedreal-timedocker

Alternative to: Datadog, New Relic

Explore

Databases9.8k

Apache-2.0Free

OpenSearch

Community-driven search and analytics suite derived from Elasticsearch with dashboards and alerting

self-hosteddockerenterprise

Alternative to: Snowflake, Databricks

Explore

Education200

GPL-3.0Free

Open Learning Exchange

Community learning platform providing offline-first educational resources for underserved communities worldwide

self-hostedoffline-capable

Alternative to: Coursera, Google Classroom

Explore

DevOps & Infrastructure36.0k

Apache-2.0Free

Istio

Service mesh for Kubernetes providing traffic management, security, and observability

golangkubernetesenterprise

Alternative to: Amazon Web Services

Explore

E-Commerce100

BSD-3Freemium

Commerce.js

Headless commerce API for adding shopping cart and checkout functionality to any website

web-basedapi-first

Alternative to: Shopify, Gumroad

Explore

Education100

MITFree

AssessML

Lightweight markup language for creating educational assessments and quizzes

web-basedlightweight

Alternative to: Kahoot!

Explore

Cloud Storage100

MITFree

LibreSync

Open-source file synchronization tool for syncing files and folders across multiple devices

self-hostedprivacy-focused

Alternative to: OneDrive

Explore

Finance & Accounting

otherFreemium+1

Manager.io

Cross-platform accounting software for small businesses with invoicing and financial statement generation

desktopcross-platform

Alternative to: QuickBooks, Xero

Explore

Development Tools6.5k

MITFree

Forgejo

Community-owned lightweight software forge for self-hosted Git hosting and collaboration

self-hostedgolangdocker

Alternative to: GitHub, Bitbucket

Explore

Finance & Accounting700

MITFree

Ontrack

Simple self-hosted budgeting app for tracking spending against monthly budgets

self-hostedweb-basedlightweight

Alternative to: Mint

Explore

Productivity200

MITFree

Capacitor Calendar

Open-source calendar application with scheduling, event management, and cross-platform integration

mobile-friendlytypescript

Alternative to: Google Docs

Explore

Design & Graphics

otherFreemium

Gravit Designer

Full-featured vector design application for screen, print, and illustration work across platforms

web-basedcross-platform

Alternative to: Adobe Illustrator

Explore

Productivity200

MITFree

BentoBox

Customizable personal dashboard and start page with bookmarks and widget-based layout

web-basedlightweight

Alternative to: Notion

Explore

Education100

AGPL-3.0Free

LabXchange

Free online science education platform with virtual labs and interactive simulations

web-basedpython

Alternative to: Coursera, Google Classroom

Explore

Finance & Accounting

otherPaid

MoneyMoney

macOS banking application for managing multiple bank accounts and tracking personal finances

desktop

Alternative to: Mint

Explore

Media & Entertainment1.5k

AGPL-3.0Free

Funkwhale

Federated music hosting and streaming platform that lets communities share audio content

self-hosteddockerfederated

Alternative to: Spotify

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Finance & Accounting400

GPL-3.0Free

moneyGuru

Personal finance management application with double-entry accounting and multi-currency support

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Alternative to: Mint, QuickBooks

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Finance & Accounting300

GPL-3.0Free

HomeBank

Personal finance software for managing bank accounts, budgets, and tracking household expenses

desktoplightweightoffline-capable

Alternative to: Mint

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Caisy

High-performance headless CMS with GraphQL API and real-time collaboration

graphqlheadlessapi-first

Alternative to: Contentful, Sanity

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Everest

Minimal open source e-commerce starter application for building and deploying custom online stores

self-hosteddocker

Alternative to: Shopify

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MITFree

LTI Tool Provider

Reference implementation for Learning Tools Interoperability standard integration

web-basedapi-first

Alternative to: Blackboard

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Cloud Storage400

AGPL-3.0Free

Garage

Lightweight S3-compatible distributed object storage for self-hosted infrastructure

rusts3-compatibledistributed

Alternative to: Amazon Web Services, Google Drive

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