Gmsh
Simulation (FEA & CFD)3D finite-element mesh generator with a built-in CAD engine
- Stars
- ★ 125
- Licence
- GPL-2.0+
- Updated
Alternative to ANSYS
OpenFOAM
Free, open-source computational fluid dynamics toolbox
★ Stars2.3k2,275 on GitHub
Last commit18 Oct 2026
LicenceGPL-3.0Per the project
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From GitHub, fetched 19 Oct 2026.
OpenFOAM is a widely used open-source CFD package with solvers for turbulence, heat transfer, multiphase flow and combustion. This listing links to the OpenFOAM Foundation release; ESI also publishes a separate OpenFOAM distribution.
Free alternative to
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