NOTE:
Posts and Docs are included.
Does not work on virutal machines.

GibbsCAM is a state-of-the-art, PC-based computer-aided
manufacturing (CAM) system for programming computer
numerically controlled (CNC) machine tools. GibbsCAM is
organized as a single application. The base packages
capabilities can be optionally extended through the addition
of seamlessly integrated modules. This way the system can be
configured for your initial needs and be gradually expanded
as your needs grow, protecting your investment.

http://www.gibbscam.com/