head to head · open source
PyRIT vs open-kritt
PyRIT has 4,731 GitHub stars, 1,012 forks, 281 open issues and last shipped today. open-kritt has 2,406 stars, 407 forks, 7 open issues and last shipped yesterday. PyRIT leads on adoption by 97% (4,731 vs 2,406 stars). PyRIT is written in Python under MIT; open-kritt is written in JavaScript under AGPL-3.0. PyRIT has attracted 21% as many forks as stars, open-kritt 17%. PyRIT was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai-security), 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
| PyRIT | open-kritt | |
|---|---|---|
| GitHub stars | ★ 4.7K | ★ 2.4K |
| License | MIT | AGPL-3.0 |
| Written in | Python | JavaScript |
| Last push | 2026-11-03 | 2026-11-02 |
| Forks | ⑂ 1.0K | ⑂ 407 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick PyRIT if
- You weight community size — 4.7K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick open-kritt if
- You want the open-kritt feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and open-kritt fits your workflow better
About PyRIT
Python Risk Identification Tool for generative AI (PyRIT) The Python Risk Identification Tool for generative AI (PyRIT) is an open source framework built to empower security professionals and engineers to proactively identify risks in generative AI systems. Check out our website for more information about how to use, install, or contribute to PyRIT. Review our security policy to report vulnerabilities privately through the Microsoft Security Response Center. Visit our Discord server to chat with the team and community. Trademarks and Citations This project may contain trademarks or logos for projects, products…
read the full PyRIT overview →
About open-kritt
open·kritt Orchestrate AI agents to find real vulnerabilities in code. An open source, self hosted security and vulnerability research platform that turns focused AI analysis into de duplicated, ranked findings with configurable validation and enrichment. Website · Documentation · Getting started · Contributing · Owners · Research paper What is open·kritt? Pointing a model at an entire repository and asking it to find vulnerabilities rarely works well. open·kritt takes a focused approach: break the research into small, well defined tasks, run them across AI agents in parallel, and combine their output into…
read the full open-kritt overview →
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Frequently asked questions
Is PyRIT or open-kritt more popular?
PyRIT has 4,731 GitHub stars and open-kritt has 2,406. PyRIT has the larger community by that measure.
Are PyRIT and open-kritt free?
Both are open source. PyRIT is licensed under MIT and open-kritt under AGPL-3.0. Neither carries a licence fee.
What is the difference between PyRIT and open-kritt?
PyRIT is written in Python and open-kritt in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, PyRIT or open-kritt?
Choose PyRIT if you want the larger community (4,731 stars) or its MIT licence terms. Choose open-kritt if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.