Self-hosted team messaging with voice, video, and AI
- Stars
- 46.4k
- Growth
- +201
- Launched
- May 2015
Custom licenseupdated today
Nextcloud Talk
nextcloud/spreed
Chat, video & audio calls for Nextcloud
Open-source alternative to Slack
What it replaces
SlackOther ways to bury Slack
Secure collaboration platform for mission-critical work
- Stars
- 39.5k
- Growth
- +369
- Launched
- Jun 2015
Custom licenseupdated today
Team chat, project management, and AI agents in one place
- Stars
- 36.6k
- Growth
- +2.9k
- Launched
- Mar 2026
Apache-2.0updated today
All-in-one workspace for project, chat, and docs
- Stars
- 28k
- Growth
- +289
- Launched
- Aug 2021
EPL-2.0updated 1d ago
Organized team chat for distributed teams
- Stars
- 26.2k
- Growth
- +212
- Launched
- Sep 2015
Apache-2.0updated 1d ago
Secure, decentralized messaging for teams and individuals
- Stars
- 13.6k
- Growth
- +149
- Launched
- Jul 2015
AGPL-3.0updated 1d ago