NttCAD is described as ': free, simple 2D/3D CAD software, multi-platform (works on Windows, Mac, linux...). Programmable in Java language. Small program size and fast download. Saves in autocad dxf, svg and NttCAD formats' and is an app in the photos & graphics category. There are more than 10 alternatives to NttCAD for a variety of platforms, including Windows, Mac, Linux, Web-based and BSD apps. The best NttCAD alternative is LibreCAD, which is both free and Open Source. Other great apps like NttCAD are BricsCAD, DraftSight, CMS IntelliCAD and nanoCAD.