CloudCompare main repository
a parametric 3D CAD modeler
A Cross Platform and Open Source Electronics Design Automation Suite
3D/2D Concrete Reinforcement in Bentley MicroStation
Open-Source Shoemaking
cppcam is a 3D CAD app for drafting G-Code toolpaths for CNC Routers
BoltGenerator is an automated CAD tool which produces 3D bolts.
Geometric kernel for CAD programs using an atomic approach
Design your own pottery for 3D printing in full color
Free 3D Mobile CAD
An Open source Analysis and SImulation Toolbox for Fuel Cells
2.5D CAD CAM emphasis on CAM and toolpaths
3D CAM program for CNC mills/lathes
CNC machine code generation for 3D models
Cuts 3D objects from polystyrene foam (EPS/XPS)
3D modeling tool based on the NURBS surfaces