Are you looking for a 2D and 3D drawing program that is fully compatible with AutoCAD? ZWCAD is the software that was designed for you. Not only will it allow you to draw in 2D and 3D while being compatible with AutoCAD, but it will also be DWG compatible.
With ZWCAD you’ll be able to use SDS, LISP and VBA to develop specific routine and application you need. Other exciting functions that are included include a design center, quick calculation, dynamic prompt, dimension replace, merge print, attribute extraction and many more. The software runs on Windows 2000, Windows XP and Windows Vista.
A 2D and 3D drawing program fully compatible with AutoCAD