The AutoCAD Resource Site AutoCAD directory, including online magazines, user groups, newsletters, news groups, and tutorials. http://www.llpsite.com/

Cadopolis.com Commercial portal for products and services related to AutoCAD, with add-ons, shareware, forums and links. [Requires Javascript] http://www.cadopolis.com/

Autodesk, Inc. The creators of AutoCAD. Includes the searchable support database, a download area and discussion groups. http://www.autodesk.com/

Autodesk Point A A second portal by Autodesk that helps designers to locate industry resources, with additional services for subscribers. http://pointA.autodesk.com/

The CAD Depot A repository of freeware and shareware tools for use with AutoCAD and other CAD systems. http://www.caddepot.com/

The CAD Compass Offers industry news, articles, and moderated discussion forums about computer aided design standards for the building industry, after free registration. http://www.cadcompass.com/

The Autodesk File A history of Autodesk and AutoCAD by John Walker, the founder of Autodesk. http://www.fourmilab.ch/autofile/

Adee's AutoCAD Answers Answers to Frequently asked AutoCAD Questions. http://www.satelephone.com/~adee/aaa/

CAD Forum Database of tips and tricks for AutoCAD, AutoCAD LT, 3D Studio, Inventor and other products by Autodesk and HP. http://www.cadforum.cz/

Flat Mtn Tips, tricks, and tools for AutoCAD LT, as well as related software for download. http://www.flatmtn.com/cad/index.html

Autocadzone Free AutoCAD help and tips, tutorials and video tutorials, and student examples of 3D models. http://www.eezylearn.pwp.blueyonder.co.uk/

Catia V5 Users Group Mailing list dedicated to helping users with the Catia family of work benches. http://groups.yahoo.com/group/catiav5/