Open Source
Mattermost
by mattermost
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
Our verdict
We have not reviewed Mattermost yet
No one at Enterprise DNA has checked this listing against its sources. The description comes from public listings gathered automatically. Any fact below shows where it came from and when it was last checked.
From the listing
About Mattermost
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle. It provides self-hosted messaging and workflow tools, built with TypeScript, and is available on GitHub.
Best for
Organizations needing secure, self-hosted collaboration for software development teams.
Use cases
- Deploy a self-hosted chat and collaboration hub for development teams
- Integrate with CI/CD and DevOps tools to streamline workflows
- Create private and public channels for secure team communication
Notes
39,464 stars on GitHub. Last updated 2026-10-29. Licensed Custom.
Pros
- Open source with a large community (39k+ stars)
- Self-hosted for data control and security
- Extensible via integrations and plugins
Cons
- Requires infrastructure and maintenance for self-hosting
- May have a steeper learning curve compared to hosted alternatives
- Feature set may lag behind proprietary competitors
Key facts
What we have checked
- Latest prerelease version
- 12.1.0 (released 5 Nov 2026)
- Days since the last commit
- 0
- GitHub forks
- 9,096
- GitHub stars
- 39,549
- Days to a first reply on issues
- 7.3
- Open issues
- 628
- Releases in the last 90 days
- 45
Each value shows when we last confirmed it and where it came from. Values we have not confirmed are left out, never guessed.
Stars and usage
How Mattermost is growing
39,489 to 39,549
Health and security
Is Mattermost looked after, and what do its setup files show
Health score
96 out of 100
| Part | Points | What we saw |
|---|---|---|
| Recent activity | 30 of 30 | Last push 0 days ago |
| Releases | 15 of 15 | 45 releases in 90 days |
| Issue replies | 16.8 of 20 | First reply in 7.3 days (median) |
| Maintainer | 15 of 15 | Owned by an organisation |
| Official source | Not counted | MCP servers only |
Alternatives
Alternatives to Mattermost
| Record | Type | How we know | Checked |
|---|---|---|---|
| DiscordThis is an alternative to it | Product | Linked recordGitHub | |
| Microsoft TeamsThis is an alternative to it | Product | Linked recordGitHub | |
| SlackThis is an alternative to it | Product | Linked recordGitHub |
Compare
Compare Mattermost side by side
Sources
Where this comes from
A source shows what was published when we checked it. It does not certify security, performance or a working installation. Read our method.
Changelog
What changed
Released 12.1.0
Released 12.1.0-rc4
Released 11.7.15
Released 11.11.4
Released 11.10.5
Released 10.11.26
Released 12.1.0-rc3
Released 12.0.2
Released 11.7.15-rc1
Released 12.1.0-rc2
Released 10.11.25
Released 12.0.1
Released 11.7.14
Released 11.11.3
Released 11.10.4
Released 11.7.13
Released 12.1.0-rc1
Released 11.11.2
Released 11.10.3
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