ArBa3d

progeCAD offers AutoCAD functionality for minimal cost. Edit DWG files from most any version of AutoCAD. Similar icons, commands and interface. Raster image embedding, IntelliCAD AutoLISP interpreter.

PDF to DWG importer, an AutoCAD Addin allows you to import PDF files into DWG or DXF files quickly and easily. It supports AutoCAD R14 thru 2009.

Batch Convert DWG and DXF to GIF/JPG/PNG/TIFF Quickly and Easily without the need of AutoCAD.

dwgPlotX is an AutoCAD batch plot tool which bears a simple windows explorer style interface to select files. In addition to plotting/, it can also bulk replace strings/texts in dwg files or export them to many formats.

This 3D graphics editing tool can be easily used for molecule creation. Falco Molecule is a 3D graphics editor for molecule creating. You can use this OpenGL editor in order to generate chemical molecules