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Alloy Analyzer vs Why3

Why3

6.8#4 in formal verification toolsFree plan
Free planWebAPILinuxSelf-hosted
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What both publish

FactAlloy AnalyzerWhy3
PurposeAlloy is a language for describing evolving structures, and the Alloy Analyzer explores models by finding structures that satisfy constraints or counterexamples to properties.Why3 is a platform for deductive program verification that uses WhyML and external theorem provers to discharge verification conditions.

Alloy Analyzer plans

  • Alloy AnalyzerFree

Why3 plans

  • Why3Free

Pick Alloy Analyzer if…

Alloy Analyzer suits people modeling systems and checking whether structures meet constraints or properties hold. It can also fit developers embedding Alloy through its JAR API or users who want graphical model views.

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