Best Ansys Fluent Alternatives in 2026
Updated
20 apps from physics simulation software ranked against Ansys Fluent on the same published basis.
- 1Ansys Fluent vs OpenSim
- 2Ansys Fluent vs SimFlow
- 3Ansys Fluent vs ngspice
- 4Ansys Fluent vs FeenoX
- 5Ansys Fluent vs COMSOL Multiphysics
- 6Ansys Fluent vs Xcos
- 7Ansys Fluent vs FEST-3D
- 8Ansys Fluent vs MPTRAC
- 9Ansys Fluent vs myPhysicsLab
- 10Ansys Fluent vs Open Source Physics
- 11Ansys Fluent vs FDTDX
- 12Ansys Fluent vs DynamicalSystems.jl
- 13Ansys Fluent vs SimScale
- 15Ansys Fluent vs OpenFOAM
- 16Ansys Fluent vs PyAutoLens
- 17Ansys Fluent vs FEATool Multiphysics
- 18Ansys Fluent vs Kinetic.jl
- 19Ansys Fluent vs Step
- 20Ansys Fluent vs ASCEND
- 21Ansys Fluent vs GNU FisicaLab
Ansys Fluent alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | OpenSim | 9.1 | Free plan | Free | API, Linux, Mac, Windows |
| 2 | SimFlow | 9.1 | Free plan | €666.67/mo | Linux, Mac, Web, Windows |
| 3 | ngspice | 8.8 | Free plan | Free | Linux, Mac, self-hosted, Windows |
| 4 | FeenoX | 8.8 | Free plan | Free | API, Linux, self-hosted, Web |
| 5 | COMSOL Multiphysics | 8.7 | No | — | API, Linux, Mac, self-hosted, Web, Windows |
| 6 | Xcos | 8.7 | Free plan | Free | Windows, Mac, Linux |
| 7 | FEST-3D | 8.7 | Free plan | Free | Linux, Mac |
| 8 | MPTRAC | 8.6 | Free plan | Free | Linux, self-hosted, Web |
| 9 | myPhysicsLab | 8.6 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 10 | Open Source Physics | 8.5 | No | — | Web, Windows, Mac, Linux, iOS, Android |
| 11 | FDTDX | 8.5 | Free plan | Free | Linux, self-hosted |
| 12 | DynamicalSystems.jl | 8.5 | Free plan | Free | Linux, Mac, Windows |
| 13 | SimScale | 8.4 | No | — | Web |
| 15 | OpenFOAM | 8.1 | No | — | Windows, Mac, Linux |
| 16 | PyAutoLens | 8.0 | Free plan | Free | Linux, Mac, Windows |
| 17 | FEATool Multiphysics | 7.8 | No | — | Windows, Linux, Mac |
| 18 | Kinetic.jl | 7.8 | No | — | API, Linux |
| 19 | Step | 7.7 | No | — | Linux |
| 20 | ASCEND | 7.7 | No | — | Windows, Mac, Linux |
| 21 | GNU FisicaLab | 7.6 | No | — | — |
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Questions about Ansys Fluent alternatives
What is the best alternative to Ansys Fluent?
OpenSim, number 1 in physics simulation software with a score of 9.1 out of 10. The others here: SimFlow, ngspice, FeenoX and 16 more.
What is the best free alternative to Ansys Fluent?
OpenSim is the best-ranked alternative with a free plan. 11 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on.