head to head · open source
Mattermost vs ProjectDiscovery
Mattermost has 39,510 GitHub stars, 9,087 forks, 1,012 open issues and last shipped yesterday. ProjectDiscovery has 32,543 stars, 3,962 forks, 107 open issues and last shipped yesterday. Mattermost leads on adoption by 21% (39,510 vs 32,543 stars). Mattermost is written in TypeScript under a custom or non-standard licence; ProjectDiscovery is written in Go under MIT. Mattermost has attracted 23% as many forks as stars, ProjectDiscovery 12%. Mattermost was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (hacktoberfest), 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 | ProjectDiscovery | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 33K |
| License | Custom / other | MIT |
| Written in | TypeScript | Go |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 9.1K | ⑂ 4.0K |
| 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 ProjectDiscovery if
- You want the ProjectDiscovery feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and ProjectDiscovery 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 ProjectDiscovery
English • 中文 • Korean • Indonesia • Spanish • 日本語 • Portuguese • Türkçe Nuclei is a modern, high performance vulnerability scanner that leverages simple YAML based templates. It empowers you to design custom vulnerability detection scenarios that mimic real world conditions, leading to zero false positives. Simple YAML format for creating and customizing vulnerability templates. Contributed by thousands of security professionals to tackle trending vulnerabilities. Reduce false positives by simulating real world steps to verify a vulnerability. Ultra fast parallel scan processing and request clustering. Integrate…
read the full ProjectDiscovery overview →
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Frequently asked questions
Is Mattermost or ProjectDiscovery more popular?
Mattermost has 39,510 GitHub stars and ProjectDiscovery has 32,543. Mattermost has the larger community by that measure.
Are Mattermost and ProjectDiscovery free?
Both are open source. Mattermost has no licence declared in this registry, and ProjectDiscovery is licensed under MIT. Both are free to self-host.
What is the difference between Mattermost and ProjectDiscovery?
Mattermost is written in TypeScript and ProjectDiscovery in Go. 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 ProjectDiscovery?
Choose Mattermost if you want the larger community (39,510 stars) or its Custom / other licence terms. Choose ProjectDiscovery if its feature set, stack or MIT licence fits better. Both are self-hostable.