The Secure CommsOS™ for mission-critical operations
- Language
- TypeScript
- Licence
- Other
- Stars
- 46k
- Latest
- 8.8.1
- Last push
- 2026-09-22
Team chat
Self-hosted messaging for teams.
3 tools
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
- Language
- TypeScript
- Licence
- Other
- Stars
- 39k
- Last push
- 2026-09-22
Zulip server and web application. Open-source team chat that helps teams stay productive and focused.
- Language
- Python
- Licence
- Apache-2.0
- Stars
- 26k
- Latest
- 12.3
- Last push
- 2026-09-22