||Standard (developed by Autodesk)
||★ ★ ★ ★ ★ Popular
DWG is short for "drawing." It is a standard format for storing 2D and 3D CAD images.
AutoCAD is the most popular program that uses the DWG format. However, several other CAD programs including Intellicad and Caddie can open and save DWG files as well.
Dassault Systemes DraftSight
CADSoftTools CST CAD Navigator
||June 1, 2009
Information from the PC File Extensions Reference