VeryDOC PDF to CAD Converter can be used to batch convert PDF files to DWG or DXF files, it is a stand-alone program that needn't of AutoCAD and Adobe Acrobat products. It will convert your PDF files to usable and editable DWG or DXF files quickly.
Downloads: 5047 - Shareware - Download Now

Features DWG to PDF conversion, DXF to PDF conversion, and DWF to PDF conversion and batch publish your DWG, DXF, DWF drawing files to PDF files of any size to answer your specific needs, such as to facilitate your clients without AutoCAD installed.
Downloads: 1494 - Shareware - Download Now

DWG DXF Converter is a bi-directional DWG DXF batch converter without AutoCAD! Features: Convert from DWG to DXF. Convert from DXF to DWG. Batch conversion. Support AutoCAD version from R9 to 2016. AutoCAD NOT required.
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A powerful and fast dwg tools, Protecting drawing file, Keep others from modifying/copying your design.DWGLock 2008.10 is a stand-alone application, no AutoCAD required; Supports AutoCAD R2.9 thru 2009 drawings.
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Advanced DWG to Image Workshop is a batch converter that allows you to convert DWG and DXF files to TIF (TIFF), JPG (JPEG), BMP, GIF and PNG without the need of AutoCAD.
Downloads: 19721 - Shareware - Download Now