AutoCAD Version Explorer (AVE) is a quick way to view preview images and check version information on AutoCAD files (.dwg) in an Explorer-like interface.

AutoCAD Version Explorer Features
Display version (v2.5, 2.6, 9, 10, 11/12, 13, 14, 2000/2000i/2002, 2004/2005/2006)
Display preview images (v13, 14, 2000/2000i/2002 & 2004/2005/2006)
Output selected files or entire directory to HTML format
Create zip files from selected files or entire directory.
Display 3X view and various file management options by right-clicking a file.
Optional shell integration.
Small, fast and self-contained. No external files required.