cppcam is a 3D CAD app for drafting G-Code toolpaths for CNC Routers
A canvas library for generating technical drawings
AVR simulator IDE
Precise gear geometry generator for spur and helical gears
CNC PAD, is a CNC program with syntax highlighting editor
3D CAM program for CNC mills/lathes
Set of tools that help CNC machinists
qnutCNC is a program to control the ethernut development board