Architosh
   Macintosh online news and information community for professionals in Macintosh CAD and 3D markets.
   http://www.architosh.com/index.phtml

CAD Forums.net
   Discussion forums for users of AutoCAD, SolidWorks, Pro/Engineer, Cadence and MicroStation.
   http://www.cadforums.net/

CAD User's Ring
   A web ring listing users and developers of CAD applications.
   http://x.webring.com/hub?ring=caduser

CADalog
   A directory of CAD resource files, an online parts library, and listings of CAD employment opportunities, with a searchable database.
   http://www.cadalog.com/

CADdigest
   Collects links to CAD/CAM/CAE related articles published online.
   http://www.caddigest.com/

Cadmonkey.com
   A CAD resource site with news articles, tips and tricks, downloadable files, discussion forums, and classifieds.
   http://www.cadmonkey.com/

LUnIx CAD/3D Shrine
   A directory of CAD related links for Linux users.
   http://www.tech-edv.co.at/lunix/CAD.html

The CADwire
   Delivers CAD industry news, product reviews, articles, events and resources.
   http://www.cadwire.net/

Ultimate CAD Directory
   CAD sites organized into top ten lists, covering all major CAD software packages, plus industries, CAD jobs, tutorials, and tips and tricks.
   http://www.tenlinks.com/

cadbot
   A specialized search engine, which lists DWG and DWF files in idrop format, as well as more common search results
   http://cadbot.com/

click4links.com
   A directory covering CAD topics for several industries.
   http://www.click4links.com/

mCADForums.com
   Online discussion forum for designers, consultants, engineers, and CAD managers. Autodesk Inventor, Solidworks, ProE, Alibre and other software discussed here.
   http://www.mcadforums.com/