Mailtrain

CommunicationGPL-3.0FreeSelf-Hosted

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

GitHub Repository Official Website

GitHub stars

Alternative to

Mailchimp

Communication

Galene

Lightweight videoconference server optimized for large groups with low bandwidth requirements

MITFree

Zulip

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

Apache-2.0Freemium

Element

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

Apache-2.0Free

Thunderbird

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

MPL-2.0Free

Listmonk

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

AGPL-3.0Free

Revolt

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

AGPL-3.0Free

Mailtrain

GitHub stars

Alternative to

Galene

Zulip

Element

Thunderbird

Listmonk

Revolt

Avis

Mailtrain

GitHub stars

Alternative to

Galene

Zulip

Element

Thunderbird

Listmonk

Revolt

Avis

Mailtrain

GitHub stars

Alternative to

Related Alternatives

Galene

Zulip

Element

Thunderbird

Listmonk

Revolt

Avis

Mailtrain

GitHub stars

Alternative to

Related Alternatives

Galene

Zulip

Element

Thunderbird

Listmonk

Revolt

Avis