Open Source Team Chat & Messaging Tools Projects

Real-time messaging platforms for team communication, group chats, and workplace collaboration.

Open-source team chat with a unique topic-based threading model that makes it easy to follow multiple conversations.

Simple, open source team messaging platform

The communications platform that puts data protection first.

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

A platform for community discussion. Free, open, simple.