Autodesk AutoCAD is described as 'Versatile CAD software offering 2D and 3D modeling, visualization, and cloud access for architectural and engineering design professionals' and is a very popular CAD software in the photos & graphics category. There are more than 100 alternatives to Autodesk AutoCAD for a variety of platforms, including Windows, Mac, Linux, Web-based and iPad apps. The best Autodesk AutoCAD alternative is FreeCAD, which is both free and Open Source. Other great apps like Autodesk AutoCAD are LibreCAD, DraftSight, SketchUp and BricsCAD.