FreeCAD is a CAD software that’s rich in features, and a great resource for developing your design skills. The more technical description is that it’s a parametric 3D modeler, which allows you to easily modify your design by going back into your model history and editing its parameters.
Download: freecadweb.org
Price: Free
Systems: PC, Mac, Linux
Learn More: ALL3DP has an extensive step-by-step tutorial on how to use FreeCAD, plus a tutorial on how to create 3D printable text or nameplates. Tag: 3D Printer App , 3D Printers User Guide