Mattermost VS Rocket.Chat
Side-by-side open source comparison
Rocket.ChatOpen Source
Open source team communication platform — Slack alternative with channels, DMs, video calls, and federation
Overview
MattermostRocket.ChatTypeOpen SourceOpen Source
CategoryCommunication--
PricingFree (self-hosted)Free (self-hosted)
Self-Hostable
LicenseMITMIT
GitHub Metrics
MattermostRocket.ChatStars38.3k45k
Forks8.8k13.5k
Contributors389900
Open Issues9212.5k
Last CommitJul 2026--
Latest Release----
Project Health
MattermostRocket.ChatHealth Score
92Excellent
85Excellent
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