Alternatives to Alloy Analyzer

16.9

Lean

Lean is a free, open-source programming language and proof assistant for formalizing mathematics, verifying software, and writing general-purpose code.

Free planWebLinuxmacOS

Free plan

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26.9

Rocq

Rocq is a free interactive theorem prover and proof assistant for developing mathematical proofs, formal specifications, and programs, including…

Free planWebExtensionLinux

Free plan

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36.8

cvc5

cvc5 is a free, open-source automatic theorem prover for satisfiability modulo theories problems.

Free planWebAPILinux

Free plan

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4. 4WH

   Why3

   Why3 is a platform for deductive program verification.

   Free planWebAPILinuxSelf-hosted
   6.8Free plan
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5. 5PV

   PVS

   PVS is a mechanized environment for formal specification and verification.

   Free planLinuxmacOSWindows
   6.6Free plan
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6. 6Z3

   Z3

   Z3 is a theorem prover and satisfiability modulo theories (SMT) solver used in software verification and analysis.

   Free planAndroidWebAPILinux
   6.6Free plan
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7. 7HO

   HOL4

   HOL4 is an interactive proof assistant for higher-order logic, with a programming environment for proving theorems and building proof tools.

   Free planLinuxmacOSSelf-hostedWindows
   6.5Free plan
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8. 8BO

   Boogie

   Boogie is a modeling language and tool for building program verifiers for other languages.

   Free planLinuxmacOSWindows
   6.4Free plan
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9. 9

   Agda

   Agda is an open-source dependently typed functional programming language and interactive proof assistant for writing and checking proofs.

   WebExtensionLinuxmacOS
   6.1
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10. 10CP

    CPAchecker

    CPAchecker is a configurable software verification tool for analyzing programs.

    Free planLinuxmacOSSelf-hostedWindows
    6.1Free plan
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11. 11IS

    Isabelle

    Isabelle is a free proof assistant for expressing mathematical formulas in a formal language and establishing them within a logical calculus.

    Free planLinuxmacOSSelf-hostedWindows
    6.1Free plan
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12. 12OP

    OpenJML

    OpenJML checks whether Java programs annotated with Java Modeling Language specifications meet those specifications.

    Free planAPIExtensionLinuxmacOS
    6.1Free plan
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13. 13SP

    SPIN

    SPIN is a free tool for checking whether asynchronous systems meet logical correctness requirements.

    Free planLinuxmacOSWindows
    6.1Free plan
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14. 14UP

    UPPAAL

    UPPAAL is an environment for modeling, simulating, and verifying real-time systems represented as networks of timed automata.

    Free planLinuxmacOSWindows
    6.1Free plan
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15. 15VE

    VeriFast

    VeriFast is a free, MIT-licensed research prototype for modular formal verification of C, Rust and Java programs.

    Free planExtensionLinuxmacOSWindows
    6.1Free plan
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16. 16CB

    CBMC

    CBMC is a free bounded model checker for C and C++ programs.

    Free planLinuxmacOSSelf-hostedWindows
    6.0Free plan
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17. 17

    F*

    F* is a free, open-source programming language for purely functional and effectful programs, designed around proving program properties.

    Free planLinuxmacOSSelf-hostedWindows
    6.0Free plan
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18. 18HL

    HOL Light

    HOL Light is free software for formally proving mathematical theorems in higher-order logic.

    WebLinuxmacOSSelf-hosted
    6.0
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19. 19NU

    NuSMV

    NuSMV is a free software tool for formally verifying finite state systems.

    Free planLinuxmacOSWindows
    6.0Free plan
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20. 20PR

    PRISM

    PRISM is a free, open-source probabilistic model checker for formal analysis of systems with random or probabilistic behaviour.

    Free planLinuxmacOSWindows
    6.0Free plan
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21. 21TL

    TLA+

    TLA+ is a free, open-source language and toolset for modeling software and hardware, particularly concurrent and distributed systems.

    Free planExtensionLinuxmacOSWindows
    6.0Free plan
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22. 22FC

    Frama-C

    Frama-C is a plug-in platform for analyzing C programs and checking for bugs.

    LinuxmacOSWindows
    5.9
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23. 23SE

    SeaHorn

    SeaHorn is an open-source framework for analyzing LLVM-based programs, developed mainly for research in automated verification.

    LinuxmacOSSelf-hosted
    5.8
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24. 24ST

    Stainless

    LinuxmacOSWindows
    5.8
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25. 25

    Dafny

    Dafny is a verification-aware programming language that lets developers write specifications alongside code and uses a static verifier to check whether programs meet them.

    LinuxmacOSSelf-hostedWindows
    5.7
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26. 26KF

    K Framework

    APILinuxmacOSSelf-hosted
    5.7
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27. 27UA

    Ultimate Automizer

    Ultimate Automizer is a free software model checker and a toolchain in the Ultimate program analysis framework.

    WebLinuxWindows
    5.7
    Visit
28. 28VI

    Viper

    Viper is a free, open-source language and tool suite for building program verifiers and prototyping verification techniques.

    WebExtensionLinuxmacOS
    5.7
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29. 29AC

    ACL2

    ACL2 is an interactive theorem prover that pairs a Lisp-based language for formal models with a reasoning engine to prove properties of those models.

    LinuxmacOSSelf-hostedWindows
    5.6
    Visit
30. 30AP

    Apalache

    APILinuxSelf-hosted
    5.4
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