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Best OpenSim Alternatives in 2026

12 apps from physics simulation software ranked against OpenSim on the same published basis.

  1. 2
    SimFlow Free plan LinuxMacWebWin €666.67/mo9.1
    OpenSim vs SimFlow
  2. 3
    SimScale Web 9.0
    OpenSim vs SimScale
  3. 4
    FeenoX Free plan apiLinuxself-hostedWeb Free8.8
    OpenSim vs FeenoX
  4. 5
    COMSOL Multiphysics Free trial apiLinuxMacself-hostedWeb 8.7
    OpenSim vs COMSOL Multiphysics
  5. 6
    OpenFOAM WinMacLinux 8.7
    OpenSim vs OpenFOAM
  6. 7
    Xcos Free plan WinMacLinux Free8.7
    OpenSim vs Xcos
  7. 8
    myPhysicsLab Free plan LinuxMacself-hostedWebWin Free8.6
    OpenSim vs myPhysicsLab
  8. 9
    Open Source Physics WebWinMacLinuxiOS 8.5
    OpenSim vs Open Source Physics
  9. 10
    ASCEND WinMacLinux 8.3
    OpenSim vs ASCEND
  10. 11
    FDTDX Free plan Linuxself-hosted Free8.3
    OpenSim vs FDTDX
  11. 12
    ngspice WinMacLinux 8.2
    OpenSim vs ngspice
  12. 13
    Step Linux 8.2
    OpenSim vs Step
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The sponsored alternative slot on this page is labelled and never changes the order above.

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