CAD 6 is described as 'Malz++Kassner CAD6 is a professional, universal 2D/3D CAD software for Windows that is used in all kinds of applications. It runs on Windows 10 / 8.1 / 8 / 7 (32 and 64 bit) as well as Windows Server 2016 / 2012 / 2008 R2 (32 and 64' and is an app. There are more than 25 alternatives to CAD 6 for a variety of platforms, including Windows, Mac, Linux, Web-based and SaaS apps. The best CAD 6 alternative is LibreCAD, which is both free and Open Source. Other great apps like CAD 6 are Autodesk AutoCAD, BricsCAD, DraftSight and QCAD.