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Mesh Booleans for AutoCAD is a mesh boolean modeling plug-in for AutoCAD?®. Mesh Booleans for AutoCAD gives AutoCAD the ability to perform boolean operations between PolyFace Meshes, Polygon Meshes and 3D Solids or a combination of all.
DWG to PDF Converter Pro is a batch converter that allows you to convert DWG to PDF, and DXF to PDF without the need of AutoCAD. The Pro version supports command line.
Ultra AutoCAD Tool is a powerful batch utility program for AutoCAD drawing files. Features include: extract data from drawing files, create DXFs from DWGs, find and replace text, find and replace block attribute values, etc.
PDF to AutoCAD (PDF to CAD) is a batch converter that allows you to batch convert your PDF files to usable and editable AutoCAD DWG or DXF files, so you can recover the entities in PDF to corresponding DWG entities easily.