28
Mastodon
Federated microblogging server.
Openfire
Real time collaboration (RTC) server.
- Licence
- Apache-2.0
- Platforms
- Java
- Release
- v5.1.2 · 17 August 2026
- Last activity
- 22 October 2026
- Spotted on
- awesome-selfhosted
Same orbit
28
Discourse
Advanced forum / community solution based on Ruby and JS.
28
Rocket.Chat
Communications platform that puts data protection first (alternative to Gitter.im and Slack).
28
Mattermost
Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab (alternative to Slack).
