Best OpenFOAM Alternatives in 2026
Updated
20 apps from physics simulation software ranked against OpenFOAM on the same published basis.
- 1OpenFOAM vs Open Source Physics
- 2OpenFOAM vs SimFlow
- 3OpenFOAM vs Algodoo
- 4OpenFOAM vs OpenSim
- 5OpenFOAM vs myPhysicsLab
- 6OpenFOAM vs COMSOL Multiphysics
- 7OpenFOAM vs SimScale
- 8OpenFOAM vs Ansys Fluent
- 10OpenFOAM vs Xcos
- 11OpenFOAM vs FEATool Multiphysics
- 12OpenFOAM vs 3JCN Physics Simulation
- 13OpenFOAM vs ASCEND
- 14OpenFOAM vs ngspice
- 15OpenFOAM vs SimEvents
- 16OpenFOAM vs Step
- 17OpenFOAM vs PhysSandbox
- 18OpenFOAM vs Interactive Physics
- 19OpenFOAM vs PhysicsPlayground
- 20OpenFOAM vs oPhysics
- 21OpenFOAM vs Physion
OpenFOAM alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Open Source Physics | 8.3 | No | — | Web, Windows, Mac, Linux, iOS, Android |
| 2 | SimFlow | 7.9 | Free plan | €666.67/mo | Linux, Mac, Web, Windows |
| 3 | Algodoo | 7.9 | No | — | Windows, Mac, iOS |
| 4 | OpenSim | 7.7 | Free plan | Free | API, Linux, Mac, Windows |
| 5 | myPhysicsLab | 7.6 | Free plan | Free | Linux, Mac, self-hosted, Web, Windows |
| 6 | COMSOL Multiphysics | 7.5 | No | — | API, Linux, Mac, self-hosted, Web, Windows |
| 7 | SimScale | 7.5 | No | — | Web |
| 8 | Ansys Fluent | 7.4 | No | — | — |
| 10 | Xcos | 7.0 | Free plan | Free | Windows, Mac, Linux |
| 11 | FEATool Multiphysics | 6.9 | No | — | Windows, Linux, Mac |
| 12 | 3JCN Physics Simulation | 6.8 | Free plan | Free | Web |
| 13 | ASCEND | 6.5 | No | — | Windows, Mac, Linux |
| 14 | ngspice | 6.4 | No | — | Windows, Mac, Linux |
| 15 | SimEvents | 6.4 | No | — | — |
| 16 | Step | 6.4 | No | — | Linux |
| 17 | PhysSandbox | 6.4 | Free plan | Free | Web |
| 18 | Interactive Physics | 6.3 | No | — | Windows, Mac |
| 19 | PhysicsPlayground | 6.3 | Free plan | Free | Web |
| 20 | oPhysics | 6.2 | No | — | Web |
| 21 | Physion | 6.1 | Free plan | $6/mo | Web |
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Questions about OpenFOAM alternatives
What is the best alternative to OpenFOAM?
Open Source Physics, number 1 in physics simulation software with a score of 8.3 out of 10. The others here: SimFlow, Algodoo, OpenSim and 16 more.
What is the best free alternative to OpenFOAM?
SimFlow is the best-ranked alternative with a free plan. 8 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.