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Best Simulation Software in 2026

Simulation software supports model-based work such as discrete-event, system-dynamics, agent-based, finite-element and multiphysics simulation. This list includes free, freemium and paid products.

  1. 1

    AnyLogic

    Free plan APILinuxMac+3

    Choose AnyLogic if you need to model complex systems using combined simulation methods, industry libraries, and integrations.

    7.6 Free plan · 30-day trial Visit site
  2. 2

    FlexSim

    Free plan WebWindows

    Choose FlexSim if you need 3D discrete-event modeling, scenario analysis, and customization options for operations systems.

    7.2 Pricing on request Visit site
  3. 3

    COMSOL Multiphysics

    by COMSOL Multiphysics
    Free trial APILinuxMac+3

    COMSOL Multiphysics covers a broad modeling workflow, with tools for simulation, model management, and custom interfaces.

    6.5 Pricing on request Visit site
  4. 4

    AIBECS.jl

    Free plan LinuxMacWindows
    6.4 Free plan Visit site
  5. 5

    ExtendSim

    Free trial APISelf-hostedWeb+1

    Choose ExtendSim if you need configurable process simulation, statistical analysis, and tools for exploring system configurations.

    6.4 From $50 · 30-day trial Visit site
  6. 6

    NetLogo

    by NetLogo Center at Northwestern University
    Free plan WindowsMacLinux+1
    6.4 Free plan Visit site
  7. 7

    Geant4

    Free plan LinuxMacWindows
    6.3 Free plan Visit site
  8. 8

    CHARMM

    Free plan LinuxMac
    6.2 Free plan Visit site
  9. 9

    AnimatLab

    Free plan Windows
    6.1 Free plan Visit site
  10. 10

    Ansys SpaceClaim

    Free trial Windows

    Choose Ansys SpaceClaim if you need Windows-based 3D design with direct modeling and its assembly, sheet-metal or surface tools.

    6.1 Pricing on request Visit site
  11. 11

    GoldSim

    Free plan WebWindows
    6.1 Free plan · 30-day trial Visit site
  12. 12

    JaamSim

    Free plan LinuxMacWindows
    6.1 Free plan Visit site
  13. 13

    EasyVVUQ

    Free plan Linux
    6.0 Free plan Visit site
  14. 14

    ESPResSo++

    Free plan Linux
    6.0 Free plan Visit site
  15. 15

    MuJoCo

    Free plan LinuxMacWindows
    6.0 Free plan Visit site
  16. 16

    OpenFOAM

    Free plan LinuxMacWindows
    6.0 Free plan Visit site
  17. 17

    OpenModelica

    Free plan LinuxMacWindows
    6.0 Free plan Visit site
  18. 18

    popkinmocks

    Free plan LinuxMacWindows
    6.0 Free plan Visit site
  19. 19

    Powersim Studio

    Free plan WebWindows
    6.0 Free plan · paid from €299 · 30-day trial Visit site
  20. 20

    PyPSA

    Free plan LinuxMacWindows
    6.0 Free plan Visit site
  21. 21

    Ansys Fluent

    by Ansys Fluent
    Paid LinuxSelf-hostedWindows

    Fluent offers a broad CFD workflow with extensive physics, solver, meshing, optimization, and integration options.

    5.9 Pricing on request · 30-day trial Visit site
  22. 22

    diffsol

    Free plan
    5.9 Free plan Visit site
  23. 23

    ForeFire

    Free plan Linux
    5.9 Free plan Visit site
  24. 24

    Mesa

    Free plan Web
    5.8 Free plan Visit site
  25. 25

    OPM Simulators

    Free plan LinuxMac
    5.8 Free plan Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare free plans, trial terms and paid pricing. Check the licence if you need to read or change code, then confirm platform support, cloud deployment and API access for your workflow.

Questions

Which simulation software has a free plan?

AIBECS.jl, AnimatLab, AnyLogic, CHARMM and diffsol are marked with free plans. Demeter is listed as open source.

Is a free trial available?

AnyLogic lists a 30-day trial, and Ansys SpaceClaim lists a free trial.

What platforms are covered?

The list includes Windows, Linux, macOS, web, API and self-hosted options. Platform availability varies by product.

Can I find open-source simulation software?

Demeter is marked open source. Check a product's licence to confirm whether its code can be read or changed.

How are simulation tools compared?

Comparison fields include free plan, paid pricing, model types, finite-element analysis, multiphysics, cloud deployment and API access.

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