Best SeaHorn Alternatives in 2026
Updated
20 apps from formal verification tools ranked against SeaHorn on the same published basis.
- 1SeaHorn vs Rocq
- 2SeaHorn vs Z3
- 3SeaHorn vs HOL4
- 4SeaHorn vs PVS
- 5SeaHorn vs Alloy Analyzer
- 6SeaHorn vs CBMC
- 7SeaHorn vs Isabelle
- 8SeaHorn vs NuSMV
- 9SeaHorn vs PRISM
- 10SeaHorn vs SPIN
- 11SeaHorn vs UPPAAL
- 12SeaHorn vs ACL2
- 13SeaHorn vs Dafny
- 14SeaHorn vs Frama-C
- 15SeaHorn vs HOL Light
- 16SeaHorn vs Stainless
- 17SeaHorn vs Ultimate Automizer
- 18SeaHorn vs CPAchecker
- 19SeaHorn vs cvc5
- 20SeaHorn vs Lean
SeaHorn alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Rocq | 6.7 | Free plan | Free | Browser, Linux, Mac, Web, Windows |
| 2 | Z3 | 6.7 | Free plan | Free | Android, API, Linux, Mac, self-hosted, Web, Windows |
| 3 | HOL4 | 6.6 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 4 | PVS | 6.6 | Free plan | Free | Linux, Mac, Windows |
| 5 | Alloy Analyzer | 6.5 | Free plan | Free | API, Linux, Mac, Windows |
| 6 | CBMC | 6.5 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 7 | Isabelle | 6.5 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 8 | NuSMV | 6.5 | Free plan | Free | Linux, Mac, Windows |
| 9 | PRISM | 6.5 | Free plan | Free | Linux, Mac, Windows |
| 10 | SPIN | 6.5 | Free plan | Free | Linux, Mac, Windows |
| 11 | UPPAAL | 6.5 | Free plan | Free | Linux, Mac, Windows |
| 12 | ACL2 | 5.6 | No | — | Linux, Mac, self-hosted, Windows |
| 13 | Dafny | 5.6 | No | — | Linux, Mac, self-hosted, Windows |
| 14 | Frama-C | 5.6 | No | — | Linux, Mac, Windows |
| 15 | HOL Light | 5.6 | No | — | Linux, Mac, self-hosted, Web, Windows |
| 16 | Stainless | 5.6 | No | — | Linux, Mac, Windows |
| 17 | Ultimate Automizer | 5.6 | No | — | Linux, Web, Windows |
| 18 | CPAchecker | 5.4 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 19 | cvc5 | 5.4 | No | — | Web, Windows, Mac, Linux |
| 20 | Lean | 5.4 | No | — | Web, Windows, Mac, Linux |
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Questions about SeaHorn alternatives
What is the best alternative to SeaHorn?
Rocq, number 1 in formal verification tools with a score of 6.7 out of 10. The others here: Z3, HOL4, PVS and 16 more.
What is the best free alternative to SeaHorn?
Rocq is the best-ranked alternative with a free plan. 12 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.