CADAM is the open source text-to-CAD web application
a parametric 3D CAD modeler
Virtual Satellite
An EnergyPlus shell for parametric studies and more ...
cppcam is a 3D CAD app for drafting G-Code toolpaths for CNC Routers
A canvas library for generating technical drawings
Free cad viewer for 3d drawings in different formats
An easy and flexible mathematical programming environment for Python.
Free multiphysics simulation software package
3D CAM program for CNC mills/lathes
NURBS-based elastic and limit analysis of masonry arches in MATLAB
Cuts 3D objects from polystyrene foam (EPS/XPS)
Drawing robot for electrical interconnection diagrams in DXF.