Gmsh - Gmsh is a 3D finite element grid generator with a build-in CAD engine and post-processor.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
TetGen - A Quality Tetrahedral Mesh Generator and a 3D Delaunay Triangulator
OpenFOAM - OpenFOAMยฎ - Official home of The Open Source Computational Fluid Dynamics (CFD) Toolbox.
NETGEN - NETGEN is an automatic 3d tetrahedral mesh generator.
ANSYS Fluent - ANSYS engineering simulation and 3D design software delivers product modeling solutions with unmatched scalability and a comprehensive multiphysics foundation.