1)   T-Flex CAD CAM Software 11.0.19
Download T-Flex 3D parametric mechanical design CAD CAM software free. Assembly design, kinematic, dynamic and FEA simulation, CNC Milling Lathe Turning and Wire EDM. View, edit and convert SolidWorks, Autodesk Inventor, Solid Edge assemblies SLDPRT

 2)   Camalot 4.0
Whether you are a small machine shop or have a Cad Cam System, for $34.95 this is a must have program. You can get in and solve your calculations and get right back to work. It is designed to be user friendly. There is clipboard support & trig calc.

 3)   GPuncher-Sheet Metal Programmer Software 2008
Engineering CadCam Software for Sheet Metals shops and designers. Develope flat pattern, cnc, send it to the Nc-punch and get your metal parts