Best PRISM Alternatives in 2026
Updated
20 apps from formal verification tools ranked against PRISM on the same published basis.
- 1PRISM vs Lean
- 2PRISM vs Rocq
- 3PRISM vs PVS
- 4PRISM vs Z3
- 5PRISM vs HOL4
- 6PRISM vs Isabelle
- 7PRISM vs SPIN
- 8PRISM vs UPPAAL
- 9PRISM vs Alloy Analyzer
- 10PRISM vs CBMC
- 11PRISM vs CPAchecker
- 12PRISM vs NuSMV
- 14PRISM vs HOL Light
- 15PRISM vs Viper
- 16PRISM vs ACL2
- 17PRISM vs Dafny
- 18PRISM vs Frama-C
- 19PRISM vs Stainless
- 20PRISM vs K Framework
- 21PRISM vs Ultimate Automizer
PRISM alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Lean | 7.4 | Free plan | Free | Linux, Mac, Web, Windows |
| 2 | Rocq | 7.4 | Free plan | Free | Browser, Linux, Mac, Web, Windows |
| 3 | PVS | 7.3 | Free plan | Free | Linux, Mac, Windows |
| 4 | Z3 | 7.3 | Free plan | Free | Android, API, Linux, Mac, self-hosted, Web, Windows |
| 5 | HOL4 | 7.2 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 6 | Isabelle | 7.1 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 7 | SPIN | 7.1 | Free plan | Free | Linux, Mac, Windows |
| 8 | UPPAAL | 7.1 | Free plan | Free | Linux, Mac, Windows |
| 9 | Alloy Analyzer | 7.0 | Free plan | Free | API, Linux, Mac, Windows |
| 10 | CBMC | 7.0 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 11 | CPAchecker | 7.0 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 12 | NuSMV | 7.0 | Free plan | Free | Linux, Mac, Windows |
| 14 | HOL Light | 6.7 | No | — | Linux, Mac, self-hosted, Web, Windows |
| 15 | Viper | 6.7 | No | — | Browser, Linux, Mac, Web, Windows |
| 16 | ACL2 | 6.6 | No | — | Linux, Mac, self-hosted, Windows |
| 17 | Dafny | 6.6 | No | — | Linux, Mac, self-hosted, Windows |
| 18 | Frama-C | 6.6 | No | — | Linux, Mac, Windows |
| 19 | Stainless | 6.6 | No | — | Linux, Mac, Windows |
| 20 | K Framework | 6.5 | No | — | API, Linux, Mac, self-hosted |
| 21 | Ultimate Automizer | 6.5 | No | — | Linux, Web, Windows |
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Questions about PRISM alternatives
What is the best alternative to PRISM?
Lean, number 1 in formal verification tools with a score of 7.4 out of 10. The others here: Rocq, PVS, Z3 and 16 more.
What is the best free alternative to PRISM?
Lean 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 on what each maker publishes: documentation depth, a free tier and the platforms it runs on.