head to head · open source
strix vs arcjet-js
strix has 63,281 GitHub stars, 6,903 forks, 383 open issues and last shipped yesterday. arcjet-js has 683 stars, 31 forks, 11 open issues and last shipped yesterday. strix leads on adoption by 9,165% (63,281 vs 683 stars). strix is written in Python under Apache-2.0; arcjet-js is written in TypeScript under Apache-2.0. strix has attracted 11% as many forks as stars, arcjet-js 5%. strix 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
| strix | arcjet-js | |
|---|---|---|
| GitHub stars | ★ 63K | ★ 683 |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 6.9K | ⑂ 31 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick strix if
- You weight community size — 63K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick arcjet-js if
- You want the arcjet-js feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and arcjet-js fits your workflow better
About strix
Strix is an open source AI penetration testing tool that deploys autonomous AI agents against a running codebase to find, validate, and fix application vulnerabilities, built for developers and security teams who want dynamic security testing without the cost and scheduling overhead of manual pentesting.
read the full strix overview →
About arcjet-js
Arcjet for JavaScript is an Apache 2.0 TypeScript monorepo of runtime security packages that developers call directly inside JavaScript and TypeScript applications, so AI features and agents can detect prompt injection, authorize tool calls, redact sensitive data, and block bots and abuse before an action runs.
read the full arcjet-js overview →
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Frequently asked questions
Is strix or arcjet-js more popular?
strix has 63,281 GitHub stars and arcjet-js has 683. strix has the larger community by that measure.
Are strix and arcjet-js free?
Both are open source. strix is licensed under Apache-2.0 and arcjet-js under Apache-2.0. Neither carries a licence fee.
What is the difference between strix and arcjet-js?
strix is written in Python and arcjet-js in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, strix or arcjet-js?
Choose strix if you want the larger community (63,281 stars) or its Apache-2.0 licence terms. Choose arcjet-js if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.