FreeCAD - An open-source parametric 3D modeler
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.
Rhino 3D - To be an effective designer today, you need tools to quickly develop your designs and accurately communicate them to everyone in the product research.
Vectric Aspire - The complete software solution for CNC Routing,
Catia - CATIA (Computer Aided Three-dimensional Interactive Application) (in English usually pronounced /k?
Mastercam - Mastercam's Dynamic Milling is a game changer for us.