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Mattermost

mattermost/mattermost
Needs setup You need your own server plus database, environment variables, domain or mail configuration. Read the official deployment docs first.

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

Team chatSelf-hostable
Mattermost website screenshot

From the README

Mattermost is an open core, self-hosted collaboration platform that offers chat, workflow automation, voice calling, screen sharing, and AI integration. This repo is the primary source for core development on the Mattermost platform; it's written in Go and React, runs as a single Linux binary, and r…

Stars
★ 39.2k
Language
TypeScript
License
AGPL-3.0
Last updated
2026-09-24
Category
Team communication
Section
General
Deploy Repository

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