STL2CAD 2000 - Import STL is an AutoCAD 2000 and 2002 application to import STL files (Stereo Lithography) into AutoCAD drawing. It can import STL file and create lines, points, faces, polyface mesh and 3d solid drawing entities.
IGES Import for AutoCAD is an IGES file import plug-in for AutoCAD?® and allows you to import GES model into AutoCAD?® for modeling or drafting in 2D/3D.
FlashDWG is a DWG to Flash converter,it is the best way to share and publish AutoCAD DWG files on the web. This is AutoCAD add-in, and request AutoCAD full to run. demo file:http://www.autodwg.com/dwg-to-flash/flash2.html