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

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

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

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

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

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

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

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

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/

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

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/