A batch DWG/DXF,DWF bi-directional converter as well as a version file converter and CAD to image converter. It converts DWG to DXF, DXF to DWG, DWG to DWG, and DXF to DXF without the need of AutoCAD. Command line option supports. Easy to use explorer like interface with drag and drop. Supported Dwg R9 - R2009 formats. Import and export DWF up to 6.0 format. Version 2.1 has added DWF, PDF, images convertion, and R2009 supports.