Link branch FreeCAD
a parametric 3D CAD modeler
A Cross Platform and Open Source Electronics Design Automation Suite
Static and Dynamic Structural Analysis of 2D and 3D frames.
converts between IGES file and text file
cppcam is a 3D CAD app for drafting G-Code toolpaths for CNC Routers
Geometric kernel for CAD programs using an atomic approach
Free 3D Mobile CAD
Open-Source Shoemaking
An Open source Analysis and SImulation Toolbox for Fuel Cells
3D CAM program for CNC mills/lathes
Cuts 3D objects from polystyrene foam (EPS/XPS)
3D modeling tool based on the NURBS surfaces