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Best Z3 Alternatives in 2026

12 apps from formal verification tools ranked against Z3 on the same published basis.

  1. 2
    ACL2 LinuxMacself-hostedWin 6.4
    Z3 vs ACL2
  2. 3
    PVS Free plan LinuxMacWin Free6.4
    Z3 vs PVS
  3. 4
    Rocq Free plan extensionLinuxMacWebWin Free6.4
    Z3 vs Rocq
  4. 5
    Isabelle Free plan LinuxMacself-hostedWin Free6.3
    Z3 vs Isabelle
  5. 6
    SPIN Free plan LinuxMacWin Free6.3
    Z3 vs SPIN
  6. 7
    UPPAAL Free plan LinuxMacWin Free6.3
    Z3 vs UPPAAL
  7. 8
    Frama-C LinuxMacWin 6.2
    Z3 vs Frama-C
  8. 9
    Alloy Analyzer Free plan apiLinuxMacWin Free5.9
    Z3 vs Alloy Analyzer
  9. 10
    CBMC WinMacLinux 5.9
    Z3 vs CBMC
  10. 11
    Dafny WinMacLinux 5.9
    Z3 vs Dafny
  11. 12
    HOL4 WinLinux 5.9
    Z3 vs HOL4
  12. 13
    K Framework LinuxMac 5.9
    Z3 vs K Framework
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