A self-hosted collaboration platform replacing Slack for security-conscious enterprises. It is written in Go and React, offering full data sovereignty, compliance features, and high scalability.
Tech Stack
TypeScriptTeam Collaboration
Why mattermost?
• High performance (Go)
• Slack-compatible webhooks
• Massive plugin ecosystem
Limitations
• High resource requirement
• Complex HA setup
• Paid enterprise features
3/6/2026
Last Update
8,388
Forks
833
Issues
Other
License
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