head to head · open source
garak vs ADR
garak has 9,308 GitHub stars, 1,294 forks, 429 open issues and last shipped 4 days ago. ADR has 1,575 stars, 148 forks, 6 open issues and last shipped yesterday. garak leads on adoption by 491% (9,308 vs 1,575 stars). garak is written in Python under Apache-2.0; ADR is written in Python under Apache-2.0. garak has attracted 14% 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 1 topic tag (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
| garak | ADR | |
|---|---|---|
| GitHub stars | ★ 9.3K | ★ 1.6K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Python | Python |
| Last push | 2026-09-16 | 2026-09-19 |
| Forks | ⑂ 1.3K | ⑂ 148 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick garak if
- You weight community size — 9.3K 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 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 garak
garak is a free, Apache 2.0 command line vulnerability scanner for large language models that probes generative AI systems for hallucination, data leakage, prompt injection, misinformation, toxicity generation, and jailbreaks, and it is aimed at security engineers, red teamers, and AI developers who need to test the models they ship.
read the full garak overview →
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 garak or ADR more popular?
garak has 9,308 GitHub stars and ADR has 1,575. garak has the larger community by that measure.
Are garak and ADR free?
Both are open source. garak is licensed under Apache-2.0 and ADR under Apache-2.0. Neither carries a licence fee.
What is the difference between garak and ADR?
garak is written in Python 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, garak or ADR?
Choose garak if you want the larger community (9,308 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.