OverCAD Cmp allows you to finds differences between versions of AutoCAD drawings and displays them graphically.01.Find the differences between two DWG.02.Display the differences using contrasting colors.03.Choose your own markup colours.04.Save the differences to separate files.05.Synchronism zoom,location.06.Detail list.07.compare specially entities.08.Save compare result.09.Ignore layers,text height,z-axis,color, linetype.

NewCADtools2
NewCADtools2 is a package of 51 productivity tools and commands for AutoCAD and derived platforms. It contains 5 toolbars(MODIFY,MODIFYII,TEXT TOOLS,MISCELLANEOUS,SHAPES). There is also menu that can be added to the main AutoCAD menu.

PDF to DXF Converter
It is a powerful windows program that will help you convert your PDF files to usable and editable DXF files quickly and easily, so you can recover the entities in PDF to corresponding DWG entities easily.

Internal CADviewer
INTERNAL CADVIEWER is DWG viewer for AutoCAD. With this AutoCAD add-on you can browse, view or open drawings stored on your computer or CD-ROM(e.g. DWG catalouges).

DICOM Dumper
DICOM Dumper is a free and simple Java-based utility for decoding and dumping the content (Data Elements of the Data Set) of DICOM 3.0-compliant files. Since it is Java-based, it runs on every OS for which a Java Runtime Environment is available.

ProgeCAD DWG Viewer
Free 30-day trial of DWG drawing viewer, plotting, rendering, PDF output! High precision measuring, zoom. pan, all the features you need to review your AutoCAD drawings and output them to paper. Easy to use,