Description: ZwCAD 2006i, more stable with over 200 enhancements, improve your drawing efficiency. ZwCAD, best alternative to AutoCAD. It can read save and edit the files produced by AutoCAD (2.5-R14-2006) and the other way round. It's the intelligent choice for architects, engineers, designers, and virtually any professional who creates professional 2D and 3D CAD drawings. ZwCAD can be customized with lisp, C++ (ADS), and VBA (Visual Basic for Application).