Self-hosted team messaging with voice, video, and AI
- Stars
- 46.3k
- Growth
- +146
- Launched
- May 2015
Custom licenseupdated today
R.I.P.Open-source alternatives to Microsoft Teams
11 projects replace Microsoft Teams, the team chat and meetings. 10 shipped code in the last 30 days.
11 open-source alternatives
Most-starred first. Stars, growth and activity are live from GitHub.
Secure collaboration platform for mission-critical work
- Stars
- 39.4k
- Growth
- +265
- Launched
- Jun 2015
Custom licenseupdated today
Secure cloud collaboration platform for organizations
- Stars
- 37.2k
- Growth
- +307
- Launched
- Jun 2016
AGPL-3.0updated today
Team chat, project management, and AI agents in one place
- Stars
- 36.2k
- Growth
- +2.4k
- Launched
- Mar 2026
Apache-2.0updated today
Private, secure video calls with no account needed
- Stars
- 30.1k
- Growth
- +167
- Launched
- Dec 2013
Apache-2.0updated today
Organized team chat for distributed teams
- Stars
- 26.1k
- Growth
- +147
- Launched
- Sep 2015
Apache-2.0updated today
Secure, decentralized messaging for teams and individuals
- Stars
- 13.6k
- Growth
- +116
- Launched
- Jul 2015
AGPL-3.0updated today
Self-hosted team workspace with chat, docs, and databases
- Stars
- 5.2k
- Growth
- +26
- Launched
- Jul 2024
Apache-2.0updated 6mo ago
Self-hosted group chat without recurring subscription fees
- Stars
- 4.8k
- Growth
- +153
- Launched
- Aug 2025
MITupdated today
Secure and elegant Matrix client for seamless conversations
- Stars
- 3.9k
- Growth
- +39
- Launched
- Apr 2021
AGPL-3.0updated 1d ago
Self-hosted, open-source WebRTC video conferencing platform for real-time communication and collaboration.
- Stars
- 3.1k
- Growth
- –
- Launched
- Aug 2021
AGPL-3.0updated today
