DWG to DXF
DWG to DXF is a software that converts DWG to DXF and vice versa in batches, without AutoCAD. It includes an AutoCAD drawing file version converter.
Any DWG Converter 
Auto CAD to PDF Converter
The AutoCAD to PDF Converter software converts DWG to PDF and DXF to PDF in batches without requiring AutoCAD. It streamlines the conversion process, enabling users to efficiently produce PDFs from their AutoCAD drawings.