head to head · open source
Mattermost vs Certipy
Mattermost has 39,097 GitHub stars, 9,006 forks, 1,012 open issues and last shipped yesterday. Certipy has 3,670 stars, 484 forks, 25 open issues and last shipped 2 months ago. Mattermost leads on adoption by 965% (39,097 vs 3,670 stars). Mattermost is written in TypeScript under a custom or non-standard licence; Certipy is written in Python under MIT. Mattermost has attracted 23% as many forks as stars, Certipy 13%. 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.
← all 15422 open source comparisons
Side by side
| Mattermost | Certipy | |
|---|---|---|
| GitHub stars | ★ 39K | ★ 3.7K |
| License | Custom / other | MIT |
| Written in | TypeScript | Python |
| Last push | 2026-09-18 | 2026-07-30 |
| Forks | ⑂ 9.0K | ⑂ 484 |
| 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 Certipy if
- You want the Certipy feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and Certipy 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 Certipy
Certipy is an open source Python toolkit, published under the MIT licence on PyPI as certipy ad , for enumerating and abusing Active Directory Certificate Services (AD CS), built for red teamers, penetration testers, and defenders who need to assess AD CS misconfigurations in Windows Active Directory environments.
read the full Certipy overview →
More in Security & Privacy
Related comparisons
More Data Security & Privacy projects
Compare either of these against the rest of the Data Security & Privacy field.
Frequently asked questions
Is Mattermost or Certipy more popular?
Mattermost has 39,097 GitHub stars and Certipy has 3,670. Mattermost has the larger community by that measure.
Are Mattermost and Certipy free?
Both are open source. Mattermost has no licence declared in this registry, and Certipy is licensed under MIT. Both are free to self-host.
What is the difference between Mattermost and Certipy?
Mattermost is written in TypeScript and Certipy in Python. 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 Certipy?
Choose Mattermost if you want the larger community (39,097 stars) or its Custom / other licence terms. Choose Certipy if its feature set, stack or MIT licence fits better. Both are self-hostable.