FreeCAD

FreeCAD is a highly customizable, scriptable and extensible computer aided design software software for the, MacOS, Linux and Windows operating systems. With FreeCad you can model and design real-life objects in 3D through parametric modeling where all 3D objects you design are controlled by parameters. FreeCAD is released as free and open source software under LGPv2+ license, and can be used for commercial and hobby projects alike.

FreeCAD is a free and open source software released under the Lesser General Public Licence, version 2 or superior (LGPL2+). Allowing the software to be used  freely for any kind of purpose, be it, private, commercial or institutional.