Best HOL4 Alternatives in 2026
Updated
20 apps from formal verification tools ranked against HOL4 on the same published basis.
- 1HOL4 vs Rocq
- 2HOL4 vs PVS
- 3HOL4 vs Z3
- 4HOL4 vs Isabelle
- 5HOL4 vs SPIN
- 6HOL4 vs UPPAAL
- 7HOL4 vs Alloy Analyzer
- 8HOL4 vs CBMC
- 9HOL4 vs ACL2
- 10HOL4 vs Dafny
- 11HOL4 vs Frama-C
- 12HOL4 vs Ultimate Automizer
- 13HOL4 vs HOL Light
- 14HOL4 vs Lean
- 15HOL4 vs CPAchecker
- 16HOL4 vs cvc5
- 17HOL4 vs NuSMV
- 18HOL4 vs PRISM
- 19HOL4 vs Stainless
- 20HOL4 vs Viper
HOL4 alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Rocq | 7.4 | Free plan | Free | Browser, Linux, Mac, Web, Windows |
| 2 | PVS | 7.3 | Free plan | Free | Linux, Mac, Windows |
| 3 | Z3 | 7.3 | Free plan | Free | Android, API, Linux, Mac, self-hosted, Web, Windows |
| 4 | Isabelle | 7.1 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 5 | SPIN | 7.1 | Free plan | Free | Linux, Mac, Windows |
| 6 | UPPAAL | 7.1 | Free plan | Free | Linux, Mac, Windows |
| 7 | Alloy Analyzer | 7.0 | Free plan | Free | API, Linux, Mac, Windows |
| 8 | CBMC | 7.0 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 9 | ACL2 | 6.6 | No | — | Linux, Mac, self-hosted, Windows |
| 10 | Dafny | 6.6 | No | — | Linux, Mac, self-hosted, Windows |
| 11 | Frama-C | 6.6 | No | — | Linux, Mac, Windows |
| 12 | Ultimate Automizer | 6.4 | No | — | Linux, Web, Windows |
| 13 | HOL Light | 6.1 | No | — | Web, Windows, Mac, Linux |
| 14 | Lean | 6.1 | No | — | Web, Windows, Mac, Linux |
| 15 | CPAchecker | 6.0 | No | — | Windows, Mac, Linux |
| 16 | cvc5 | 6.0 | No | — | Web, Windows, Mac, Linux |
| 17 | NuSMV | 6.0 | Free plan | Free | Linux, Mac, Windows |
| 18 | PRISM | 6.0 | Free plan | Free | Linux, Mac, Windows |
| 19 | Stainless | 6.0 | No | — | Windows, Mac, Linux |
| 20 | Viper | 6.0 | No | — | Windows, Mac, Linux |
Make your app an alternative to HOL4
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about HOL4 alternatives
What is the best alternative to HOL4?
Rocq, number 1 in formal verification tools with a score of 7.4 out of 10. The others here: PVS, Z3, Isabelle and 16 more.
What is the best free alternative to HOL4?
Rocq is the best-ranked alternative with a free plan. 10 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on.