dwgPlotX is an AutoCAD batch plot tool with a simple windows explorer style inteface to select files and folders. It automatically scans plotters and papers available in the system. It loads all the xrefs of a drawing before plotting. In addition to plotting/printing, it can also bulk replace strings and export dwg files to various formats .( AutoCAD is required for operation).

HPGL Import for AutoCAD is a plug-in for AutoCAD 2000, 2000i, 2002 and 2004. This plug-in gives AutoCAD the ability to import geometric data from HPGL Plot (PLT) files.

HPGL Import for AutoCAD is very easy to use. It adds a new command to AutoCAD called "HPGLIN". Simply type "HPGLIN" at the AutoCAD command prompt and select a HPGL Plot (.plt) file to import.

Amethyst DWG-2-DWG is a powerful Windows program that enables you to quickly and easily batch convert AutoCAD DWG and DXF files to a other file versions. Additionally, you can batch print AutoCAD DWG and DXF files. Support for all versions of AutoCAD. Stand-alone utility - AutoCAD is NOT required.

DWF Importer(a.k.a. DWG to DWF Converter) is An AutoCAD Addin let you import dwf file into AutoCAD. It supports AutoCAD 2005, 2004, 2002, 2000(i) and R14.
Features highlight:Supports the new DWF v6.0 multi page specification; All DWF elements generated by AutoCAD "plot to DWF" are supported;If layers are saved in DWF, they will be recreated in the DWG ;

DWF Importer(a.k.a. DWG to DWF Converter) is An AutoCAD Addin let you import dwf file into AutoCAD. It supports AutoCAD 2005, 2004, 2002, 2000(i) and R14.
Features highlight:Supports the new DWF v6.0 multi page specification; All DWF elements generated by AutoCAD "plot to DWF" are supported;If layers are saved in DWF, they will be recreated in the DWG ;

DWF Importer(a.k.a. DWG to DWF Converter) is An AutoCAD Addin let you import dwf file into AutoCAD. It supports AutoCAD 2005, 2004, 2002, 2000(i) and R14.
Features highlight:Supports the new DWF v6.0 multi page specification; All DWF elements generated by AutoCAD "plot to DWF" are supported;If layers are saved in DWF, they will be recreated in the DWG ;

DWF Importer(a.k.a. DWG to DWF Converter) is An AutoCAD Addin let you import dwf file into AutoCAD. It supports AutoCAD 2005, 2004, 2002, 2000(i) and R14.
Features highlight:Supports the new DWF v6.0 multi page specification; All DWF elements generated by AutoCAD "plot to DWF" are supported;If layers are saved in DWF, they will be recreated in the DWG ;

DWF Importer(a.k.a. DWF to DWG Converter) is An AutoCAD Addin let you import dwf file into AutoCAD. It supports AutoCAD 2005, 2004, 2002, 2000(i) and R14.
Features highlight:Supports the new DWF v6.0 multi page specification; All DWF elements generated by AutoCAD "plot to DWF" are supported;If layers are saved in DWF, they will be recreated in the DWG ;

AutoCAD Attribute Extractor Help you batch extract attribute data from AutoCAD attribute blocks without need of AutoCAD. It supports most DWG formats including AutoCAD Release 9 thru AutoCAD Release 2006

Z-Plot is a plotting software that allows you to visualize a multitude of mathematical functions and curves. The software has a powerful mathematical formula interpreter, that also allows the user to handle complex numbers, easily. The display can be switched from 2D to 3D mode. Additionally, diagrams can be made from a data table.