This is AutoCAD compatible CAD drawing and drafting software and much less expensive than the AutoCAD.
ZWCAD 2010 is cost-effective & powerful CAD software for 2D and 3D design. With ZWCAD 2010, you get very high levels in Windows Operating Systems. It also extends efficient drafting & management features and powerful APIs if you are inclined to customize things and extend functionality. ZWCAD offers DWG file format support` It is easy to open, edit, and save any existing DWG file generated by AutoCAD from version 2.5 to 2011 without conversion or data loss. It is compatible with Windows XP, Windows 2003, Windows Vista, Windows 7, etc.
When one talks of compatibility between two programs, the right question to ask is how much? No two programs are 100% compatible, whatever the sellers might say. So the best bet is to try it out in your work environment and make sure it gives you predictable results in the kind of things you do day in and day out. Users do not really need any extensive retraining on change over to the ZxCAD. It arranges menus, toolbars, the command line, the drawing area, the properties palette, and dialog boxes in a style that conforms to the expectations. This lets AutoCAD- trained users begin working with ZWCAD almost immediately.
The other thing that is attractive - the APIs. This software provides Lisp and VBA interfaces as well as SDS (like the ADS) and ZRX (like the ARX). Extending the software or customizing or even creating automated tools are quite easy with these programming interfaces. Availability in multiple languages is an advantage too.