Autodesk, Inc. -  .

Adee's AutoCAD Answers - - Answers to Frequently asked AutoCAD Questions.

Autocad Central - - A series of basic AutoCAD tutorials, and a discussion forum for questions and answers.

AutoCADder blog - - News and comments about AutoCAD, LT, Inventor and other Autodesk software, product releases, and technology.

Autocadzone - - Free AutoCAD help and tips, tutorials and video tutorials, and student examples of 3D models.

Autodesk Blogs - - A series of Blogs from Autodesk employees about various topics related to the company and its products.

The Autodesk File - - A history of Autodesk and AutoCAD by John Walker, the founder of Autodesk.

Autodesk Point A - - A second portal by Autodesk that helps designers to locate industry resources, with additional services for subscribers.

The CAD Depot - - A repository of freeware and shareware tools for use with AutoCAD and other CAD systems.

CAD Forum - - Database of tips and tricks for AutoCAD, AutoCAD LT, 3D Studio, Inventor and other products by Autodesk and HP.

CAD Panel - - A source for AutoCAD users to download free AutoLISP routines, hatch patterns, material libraries, tips and techniques, extra help, and articles.

Cadalyst: Bugwatch - - A monthly column documenting old and new bugs in AutoCAD and their workarounds or fixes, where available.

Cadopolis.com - - Commercial portal for products and services related to AutoCAD, with add-ons, software downloads, forums and links.

Cadville - - Free portal for AutoCAD and Autodesk product users, with news, product reviews, an events calendar, and links to other resources.