A 3D surface and volumetric mesh generator for MATLAB/Octave
A library for polyhedral mesh generation
The Open Source CFD Toolbox
CFDTool - Easy to Use Computational Fluid Dynamics (CFD) Toolbox
FEATool Multiphysics is an easy-to-use FEA and CFD Simulation Toolbox
NETGEN is an automatic 3d tetrahedral mesh generator
Graphical Interface for Medical Image Analysis and Simulation
Advanced numerical instruments: adaptive meshing, FE methods, solvers