Model Railway CAD program
A set of freeware applications for viewing/processing P-CAD files.
A Windows-based viewer currently supporting CDR & 2D DXF files
2D CAD software
OpenNum lets you distribute solvers with a nice graphical interface
The full-featured, easy-to-use desktop GIS with real processing power!
Subroutines for planar mechanism simulation
CT Soft is software designed to be used with Control Techniques Drives
A CAD/CAM Package for CNC GCode Creation
CNC control software
dedalo is a 2d cad drawing software written in python3.
Open Source CAD