head to head · open source
Mattermost vs Quiet
Mattermost has 39,093 GitHub stars, 9,000 forks, 1,012 open issues and last shipped yesterday. Quiet has 2,648 stars, 145 forks, 773 open issues and last shipped yesterday. Mattermost leads on adoption by 1,376% (39,093 vs 2,648 stars). Mattermost is written in TypeScript under a custom or non-standard licence; Quiet is written in C under GPL-3.0. Mattermost has attracted 23% as many forks as stars, Quiet 5%. Mattermost was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (collaboration), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Mattermost | Quiet | |
|---|---|---|
| GitHub stars | ★ 39K | ★ 2.6K |
| License | Custom / other | GPL-3.0 |
| Written in | TypeScript | C |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 9.0K | ⑂ 145 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Mattermost if
- You weight community size — 39K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Quiet if
- You want the Quiet feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches C
- You evaluated both and Quiet fits your workflow better
About Mattermost
Mattermost is an open core, self hosted collaboration platform for teams that need secure chat, workflow automation, voice calling, screen sharing, and AI integration while keeping the deployment under their own control.
read the full Mattermost overview →
About Quiet
Quiet is an open source team chat application that aims to provide a private, peer to peer alternative to Slack, Discord, and Element. It is built around Tor and IPFS, and it is designed so that a team can communicate without trusting a central service or operating its own server. The project lives in the privacy and decentralized software ecosystem.
read the full Quiet overview →
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Frequently asked questions
Is Mattermost or Quiet more popular?
Mattermost has 39,093 GitHub stars and Quiet has 2,648. Mattermost has the larger community by that measure.
Are Mattermost and Quiet free?
Both are open source. Mattermost has no licence declared in this registry, and Quiet is licensed under GPL-3.0. Both are free to self-host.
What is the difference between Mattermost and Quiet?
Mattermost is written in TypeScript and Quiet in C. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Mattermost or Quiet?
Choose Mattermost if you want the larger community (39,093 stars) or its Custom / other licence terms. Choose Quiet if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.