Active DWG DXF Converter lets you batch convert DWG Files into DXF files and vice versa without AutoCAD. It is also an AutoCAD drawing file version converter supporting both low to high and high to low conversions. Active DWG DXF Converter Supports versions from AutoCAD R2.6 to the latest version AutoCAD 2009.
Features:
* Converting DWG to DXF;
* Converting DXF to DWG;
* AutoCAD DWG DWG Version Conversion.
* Command Line Supported

The license of this software is Free Trial Software, the price is $78, you can free download and get a free trial.