head to head · open source
nono vs ADR
nono has 4,140 GitHub stars, 274 forks, 201 open issues and last shipped 2 days ago. ADR has 1,575 stars, 148 forks, 6 open issues and last shipped yesterday. nono leads on adoption by 163% (4,140 vs 1,575 stars). nono is written in Rust under Apache-2.0; ADR is written in Python under Apache-2.0. nono has attracted 7% as many forks as stars, ADR 9%. ADR 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 | ADR | |
|---|---|---|
| GitHub stars | ★ 4.1K | ★ 1.6K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Python |
| Last push | 2026-09-18 | 2026-09-19 |
| Forks | ⑂ 274 | ⑂ 148 |
| 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 ADR if
- You want the ADR feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and ADR 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 ADR
ADR is an open source enterprise security system for AI agents. It is built in Python under the Apache 2.0 license and lives in the AI security and privacy ecosystem. It targets employee facing coding agents such as Cursor, Claude Code, Codex, GitHub Copilot CLI, and DeepSeek Harness, and customer facing agents such as AI support agents.
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Frequently asked questions
Is nono or ADR more popular?
nono has 4,140 GitHub stars and ADR has 1,575. nono has the larger community by that measure.
Are nono and ADR free?
Both are open source. nono is licensed under Apache-2.0 and ADR under Apache-2.0. Neither carries a licence fee.
What is the difference between nono and ADR?
nono is written in Rust and ADR 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, nono or ADR?
Choose nono if you want the larger community (4,140 stars) or its Apache-2.0 licence terms. Choose ADR if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.