LinuxCNC (the Enhanced Machine Control) - LinuxCNC: an open source CNC machine controller. It can drive milling machines, lathes, 3d printers, laser cutters, plasma cutters, robot arms, hexapods, and more.
Vectorworks - Vectorworks 2D / 3D CAD and BIM software for Mac or Windows provides one flexible solution for your entire design process. Sketch, model, and present with the ultimate software from start to finish.
PyCAM - PyCAM is a toolpath generator for 3-axis CNC machining.
VARKON - Varkon is a very powerful parametric 2D/3D CAD, modeling and application development tool for...
Mach3 - Mach3 is very popular among the Hobby CNC community.
ArCADia-Architecture - ArCADia-Architecture is a revolutionary component for the instant creation of architectural documentation and object drawing.