FEATool Multiphysics is an easy-to-use FEA and CFD Simulation Toolbox
cppcam is a 3D CAD app for drafting G-Code toolpaths for CNC Routers
Design your own pottery for 3D printing in full color
Free 3D Mobile CAD
Small application to open multiple file with a pre-processor
Cuts 3D objects from polystyrene foam (EPS/XPS)