head to head · open source
Mattermost vs Marble
Mattermost has 39,510 GitHub stars, 9,087 forks, 1,012 open issues and last shipped yesterday. Marble has 618 stars, 92 forks, 0 open issues and last shipped 12 days ago. Mattermost leads on adoption by 6,293% (39,510 vs 618 stars). Mattermost is written in TypeScript under a custom or non-standard licence; Marble is written in HTML under a custom or non-standard licence. Mattermost has attracted 23% as many forks as stars, Marble 15%. Mattermost was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | Marble | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 618 |
| License | Custom / other | Custom / other |
| Written in | TypeScript | HTML |
| Last push | 2026-11-02 | 2026-10-22 |
| Forks | ⑂ 9.1K | ⑂ 92 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Mattermost if
- You weight community size — 40K 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 Marble if
- You want the Marble feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches HTML
- You evaluated both and Marble fits your workflow better
About Mattermost
Mattermost is an open core, self hosted collaboration platform that offers chat, workflow automation, voice calling, screen sharing, and AI integration. This repo is the primary source for core development on the Mattermost platform; it's written in Go and React, runs as a single Linux binary, and relies on PostgreSQL. A new compiled version is released under an MIT license every month on the 16th. Deploy Mattermost on premises, or try it for free in the cloud. Learn more about the following use cases with Mattermost: DevSecOps Incident Resolution IT Service Desk Other useful resources: Download and Install…
read the full Mattermost overview →
About Marble
Marble The best of Build and Buy: keep full control and build on top. Marble is the flexible alternative to Comply Advantage, Actimize or Fiserv for Transaction Monitoring, AML Screening and Case investigation powered by AI. Our Open Source core provides the flexibility to deploy On Premise or SaaS. It is already used by 100+ fast growing fintechs, banks and top crypto exchanges in 15+ countries in the world. What I like the most about Marble is Flexibility . In other tools, you don't understand what is going on behind the scenes which ends up lacking precision and possibilities to troubleshoot your detection…
read the full Marble overview →
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Frequently asked questions
Is Mattermost or Marble more popular?
Mattermost has 39,510 GitHub stars and Marble has 618. Mattermost has the larger community by that measure.
Are Mattermost and Marble free?
Neither Mattermost nor Marble declares a licence in this registry, so check each project's own repository before relying on either for a commercial use. Both are free to self-host.
What is the difference between Mattermost and Marble?
Mattermost is written in TypeScript and Marble in HTML. 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 Marble?
Choose Mattermost if you want the larger community (39,510 stars) or its Custom / other licence terms. Choose Marble if its feature set, stack or Custom / other licence fits better. Both are self-hostable.