Onshape is described as 'Professional CAD system – Parts, Assemblies, Drawings – with version control and collaboration built in. Each Onshape plan (Free, Education, Professional, and Enterprise) gives you all of the CAD and data management functionality with no time limit' and is a CAD software in the development category. There are more than 25 alternatives to Onshape for a variety of platforms, including Windows, Mac, Web-based, Linux and SaaS apps. The best Onshape alternative is FreeCAD, which is both free and Open Source. Other great apps like Onshape are SketchUp, LibreCAD, Autodesk AutoCAD and SOLIDWORKS.