Side by side

Prusti vs Why3

Prusti

4.7#32 in formal verification tools

LinuxmacOSWindows

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Why3

6.8#4 in formal verification toolsFree plan

Free planWebAPILinuxSelf-hosted

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Prusti plans

No prices published.

Why3 plans

Why3Free

Pick Prusti if…

You want what its maker publishes above — check its page for the details.

Pick Why3 if…

Why3 suits developers and researchers working on deductive verification with contracts and WhyML. It may also fit users who need to connect external provers or use its OCaml API.

Charts they share

Formal Verification Tools