head to head · open source
nono vs arcjet-js
nono has 4,140 GitHub stars, 274 forks, 201 open issues and last shipped 2 days ago. arcjet-js has 683 stars, 32 forks, 11 open issues and last shipped 2 days ago. nono leads on adoption by 506% (4,140 vs 683 stars). nono is written in Rust under Apache-2.0; arcjet-js is written in TypeScript under Apache-2.0. nono has attracted 7% as many forks as stars, arcjet-js 5%. arcjet-js was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 5 topic tags (agent-security, ai-agents, ai-security, llm-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
| nono | arcjet-js | |
|---|---|---|
| GitHub stars | ★ 4.1K | ★ 683 |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | TypeScript |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 274 | ⑂ 32 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick nono if
- You weight community size — 4.1K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- 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 nono
nono is a Rust project for secure multiplexed execution paths for AI agents. It lives in AI security and privacy. It is built by the team that brought Sigstore. It aims to run agents with zero trust, zero setup, and zero latency.
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 nono or arcjet-js more popular?
nono has 4,140 GitHub stars and arcjet-js has 683. nono has the larger community by that measure.
Are nono and arcjet-js free?
Both are open source. nono is licensed under Apache-2.0 and arcjet-js under Apache-2.0. Neither carries a licence fee.
What is the difference between nono and arcjet-js?
nono is written in Rust 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, nono or arcjet-js?
Choose nono if you want the larger community (4,140 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.