alternative to Mattermost, Slack, Microsoft Teams
Rocket.Chat
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- 8.7.22026-11-10Node: 22.22.3 || 22.23.4
- 9.0.02026-11-10Release Date: November 10, 2026
- 9.0.0-rc.82026-11-07Node: >=22.22.3 <23 || >=24.15.0 <25pre-release
- 8.9.12026-11-068.9.1 LTS
- 8.8.22026-11-06Node: 22.22.3 || 22.23.4
✓ signed The latest release, 9.0.0, carries a signature GitHub verified.
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- MattermostChannels, threads and federation, self-hosted.Full replacement
- SlackChannels, threads and federation on your own server, with an importer for Slack exports.Full replacement
- Microsoft TeamsChat and calls on your own server, without the Microsoft 365 integration.Partial