A CAD application for creating virtual LEGO models
cppcam is a 3D CAD app for drafting G-Code toolpaths for CNC Routers
A canvas library for generating technical drawings
A set ot tools for surveyors addon to many CAD environments
Precise gear geometry generator for spur and helical gears
3D CAM program for CNC mills/lathes
Drawing robot for electrical interconnection diagrams in DXF.