Best Agda Alternatives in 2026
Updated
20 apps from formal verification tools ranked against Agda on the same published basis.
- 1Agda vs Z3
- 2Agda vs HOL4
- 3Agda vs Lean
- 4Agda vs PVS
- 5Agda vs Rocq
- 6Agda vs Alloy Analyzer
- 7Agda vs CBMC
- 8Agda vs CPAchecker
- 9Agda vs Isabelle
- 10Agda vs NuSMV
- 11Agda vs PRISM
- 12Agda vs SPIN
- 13Agda vs UPPAAL
- 14Agda vs ACL2
- 15Agda vs Dafny
- 16Agda vs Frama-C
- 17Agda vs HOL Light
- 18Agda vs K Framework
- 19Agda vs Stainless
- 20Agda vs Ultimate Automizer
Agda alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Z3 | 7.8 | Free plan | Free | Android, API, Linux, Mac, self-hosted, Web, Windows |
| 2 | HOL4 | 6.4 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 3 | Lean | 6.4 | Free plan | Free | Linux, Mac, Web, Windows |
| 4 | PVS | 6.4 | Free plan | Free | Linux, Mac, Windows |
| 5 | Rocq | 6.4 | Free plan | Free | Browser, Linux, Mac, Web, Windows |
| 6 | Alloy Analyzer | 6.3 | Free plan | Free | API, Linux, Mac, Windows |
| 7 | CBMC | 6.3 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 8 | CPAchecker | 6.3 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 9 | Isabelle | 6.3 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 10 | NuSMV | 6.3 | Free plan | Free | Linux, Mac, Windows |
| 11 | PRISM | 6.3 | Free plan | Free | Linux, Mac, Windows |
| 12 | SPIN | 6.3 | Free plan | Free | Linux, Mac, Windows |
| 13 | UPPAAL | 6.3 | Free plan | Free | Linux, Mac, Windows |
| 14 | ACL2 | 5.8 | No | — | Linux, Mac, self-hosted, Windows |
| 15 | Dafny | 5.8 | No | — | Linux, Mac, self-hosted, Windows |
| 16 | Frama-C | 5.8 | No | — | Linux, Mac, Windows |
| 17 | HOL Light | 5.8 | No | — | Linux, Mac, self-hosted, Web, Windows |
| 18 | K Framework | 5.8 | No | — | API, Linux, Mac, self-hosted |
| 19 | Stainless | 5.8 | No | — | Linux, Mac, Windows |
| 20 | Ultimate Automizer | 5.7 | No | — | Linux, Web, Windows |
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Questions about Agda alternatives
What is the best alternative to Agda?
Z3, number 1 in formal verification tools with a score of 7.8 out of 10. The others here: HOL4, Lean, PVS and 16 more.
What is the best free alternative to Agda?
Z3 is the best-ranked alternative with a free plan. 13 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.