Converters most sought after by AutoCAD users. CAD Version Converter is a small tool that will enable you to convert DWG to DXF files, and convert DXF to DWG files with AutoCAD not required. In additional to convert between DWG and DXF files, it allows you to convert AutoCAD drawing files between different versions. Supported versions range from AutoCAD R2.5 to the latest AutoCAD 2005.
CAD Version Converter Features:
1. Convert DWG to DXF
2. Convert DXF to DWG
3. Convert AutoCAD DWG drawing to another version
4. Batch conversion
5. Speedy conversion
6. Multiple-threading
7. Command-line switches (only available in the command line version)
8. Supported AutoCAD drawing version R2.5 ~ R2005
9. Standalone with AutoCAD not required

The license of this software is Freeware, you can free download and free use this cad software.