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Best FDTDX Alternatives in 2026

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

  1. 1
    OpenSim Free plan apiLinuxMacWin Free9.1
    FDTDX vs OpenSim
  2. 2
    SimFlow Free plan LinuxMacWebWin €666.67/mo9.1
    FDTDX vs SimFlow
  3. 3
    SimScale Web 9.0
    FDTDX vs SimScale
  4. 4
    FeenoX Free plan apiLinuxself-hostedWeb Free8.8
    FDTDX vs FeenoX
  5. 5
    COMSOL Multiphysics Free trial apiLinuxMacself-hostedWeb 8.7
    FDTDX vs COMSOL Multiphysics
  6. 6
    OpenFOAM WinMacLinux 8.7
    FDTDX vs OpenFOAM
  7. 7
    Xcos Free plan WinMacLinux Free8.7
    FDTDX vs Xcos
  8. 8
    myPhysicsLab Free plan LinuxMacself-hostedWebWin Free8.6
    FDTDX vs myPhysicsLab
  9. 9
    Open Source Physics WebWinMacLinuxiOS 8.5
    FDTDX vs Open Source Physics
  10. 10
    ASCEND WinMacLinux 8.3
    FDTDX vs ASCEND
  11. 12
    ngspice WinMacLinux 8.2
    FDTDX vs ngspice
  12. 13
    Step Linux 8.2
    FDTDX vs Step
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