A python parametric CAD scripting framework based on OCCT
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
Draw vector graphics to scale using a descriptive language
Toolkit for working with and mapping geospatial data
Another drawing editor for LaTeX with PSTricks & TikZ
The programmer's solid 3D CAD modeller
Converts between many 3D data formats
A drawer for origami crease pattern