Master 3D design and mechanical engineering with FreeCAD. Free, open-source parametric 3D modeler for 3D printing, CAD design, and architecture.
FreeCAD is an open-source, highly customizable 3D parametric CAD modeler. Designed primarily to design real-world objects of any size, it allows you to easily modify your design by going back into your model history and changing its parameters. FreeCAD serves as a powerful free alternative to commercial CAD software like SolidWorks and AutoCAD for mechanical engineering, product design, architecture, and 3D printing.