Security &amp; Privacy

Security & Privacy17.5k

age

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

cligolanglightweight

Alternative to: 1Password, LastPass

Security & Privacy14.0k

otherFreemium

authentik

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

self-hosteddockerpython

Alternative to: Okta, Auth0

Security & Privacy15.8k

Apache-2.0Freemium

Ory Hydra

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

Alternative to: Okta, Auth0

Security & Privacy9.2k

MITFreemium

CrowdSec

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

Alternative to: CrowdStrike, Norton

Security & Privacy4.4k

self-hostedcross-platformenterprise

OSSEC HIDS

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

Alternative to: CrowdStrike, Splunk Security

Security & Privacy1.8k

Snort

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

self-hostedcli

Alternative to: CrowdStrike, Splunk Security

Security & Privacy21.0k

desktope2e-encryptedcross-platform

KeePassXC

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

Alternative to: LastPass, 1Password

Security & Privacy17.8k

AGPL-3.0Freemium

Teleport

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

Alternative to: Okta, Auth0

Security & Privacy4.6k

self-hostedclicross-platform

ClamAV

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

Alternative to: Norton, McAfee

Security & Privacy3.8k

DefectDojo

Security orchestration and vulnerability management platform for DevSecOps teams

pythondjangoself-hosted

Alternative to: CrowdStrike

Security & Privacy1.2k

FreeIPA

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

self-hostedenterprise

Alternative to: Okta, Auth0

Security & Privacy1.1k

otherFree

OpenLDAP

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

self-hostedenterprisecli

Alternative to: Okta, Auth0

Security & Privacy31.0k

otherFreemium

HashiCorp Vault

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

Alternative to: 1Password, LastPass

golangclivulnerability-scanner

Security & Privacy21.0k

MITFree

Nuclei

Fast and customizable vulnerability scanner based on simple YAML templates

Alternative to: CrowdStrike, Splunk Security

Security & Privacy12.3k

Fail2Ban

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

self-hostedpythoncli

Alternative to: CrowdStrike, Norton

Security & Privacy6.8k

step-ca

Private certificate authority for securing internal services with automated TLS certificates

golangself-hosteddocker

Alternative to: Okta, Auth0

Security & Privacy3.2k

OpenVAS

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

Alternative to: CrowdStrike, Norton

Security & Privacy1.3k

clie2e-encryptedprivacy-focused

GnuPG

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

Alternative to: 1Password, LastPass

Security & Privacy11.5k

BSD-3Freemium+2

NetBird

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

Alternative to: NordVPN, ExpressVPN

Security & Privacy23.5k

Keycloak

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

Alternative to: Okta, Auth0

self-hostedcross-platformcli

Security & Privacy10.8k

GPL-3.0Freemium+1

OpenVPN

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

Alternative to: NordVPN, ExpressVPN

self-hosteddockere2e-encrypted

Security & Privacy39.0k

AGPL-3.0Free

Vaultwarden

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

Alternative to: LastPass, 1Password

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

Security & Privacy13.5k

Lynis

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

clilightweight

Alternative to: CrowdStrike, Norton

self-hostedprivacy-focusedlightweight

Security & Privacy10.0k

GPL-3.0Free+1

WireGuard

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

Alternative to: NordVPN, ExpressVPN

Security & Privacy4.4k

antiviruscross-platformcli

ClamAV

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

Alternative to: McAfee, Norton

Security & Privacy4.6k

self-hostedclicross-platform

OSSEC

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

Alternative to: CrowdStrike, Splunk Security

Security & Privacy3.4k

self-hostedplugin-systemweb-based

OPNsense

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

Alternative to: Norton, McAfee

Security & Privacy2.4k

Security Onion

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

Alternative to: Splunk Security, CrowdStrike

self-hosteddockerweb-based

Security & Privacy6.8k

Apache-2.0Freemium+2

Firezone

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

Alternative to: NordVPN, ExpressVPN

Security & Privacy22.0k

Authelia

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

self-hosteddockergolang

Alternative to: Okta, Auth0

Security & Privacy10.8k

desktoppythonprivacy-focused

OpenSnitch

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

Alternative to: Norton, McAfee

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

Security & Privacy5.0k

Suricata

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

self-hostedcli

Alternative to: CrowdStrike, Splunk Security

Security & Privacy24.0k

Headscale

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

Alternative to: NordVPN, ExpressVPN

Security & Privacy11.0k

Wazuh

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

Alternative to: CrowdStrike, Splunk Security

desktopgolangprivacy-focused

Security & Privacy9.5k

AGPL-3.0Freemium

Portmaster

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

Alternative to: Norton, McAfee

Security & Privacy9.0k

Apache-2.0Freemium

ZITADEL

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

Alternative to: Okta, Auth0

Security & Privacy5.0k

pfSense

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

self-hostedenterprise

Alternative to: Norton, McAfee

Security & Privacy24.0k

Trivy

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

cligolangdocker

Alternative to: CrowdStrike, Splunk Security

Security & Privacy7.5k

self-hostedkubernetesdocker

Falco

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

Alternative to: CrowdStrike, Splunk Security

e2e-encryptedcross-platformself-hosted

Security & Privacy2.7k

AGPL-3.0Freemium+3

Padloc

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

Alternative to: LastPass, 1Password