CATIA

Rainer Sieber CAE Systems - Voltool is a supplementary product (IUA) for easier and faster work in surface design and topology handling with CATIA V4.
http://voltool.caesystems.com/

CADAM Drafting - Information about the 2d drafting solution within the CATIA product family from Dassault Systems.
http://www.cadam.com/

IBM Engineering Solutions / CATIA - CATIA is marketed worldwide by IBM.
http://www.catia.ibm.com/catmain.html

CATIA Operators Exchange - COE is dedicated to the exchange of information about CATIA and other Dassault Systèmes software products.
http://www.coe.org/

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

Catiaworld.com - An independent resource for CATIA and other CAD/CAM software by Dassault. Offers business listings for engineering, hardware, software, and recruitment, with more information for registered users.
http://www.catiaworld.com/

CATIA Users of Central Ontario - Volunteer organization serving the needs of CATIA users. Hints and Tips for users as well as minutes of meetings and notices of upcoming events.
http://ca.geocities.com/catiawebca/cucoweb-frames.html

CATIA IUA Functions by EMA - Customization and extension functions for CATIA, with free download of some examples.
http://www.ema3.com/

Practical Catia - Catia training and job listings involving CATIA CAD/CAM/CAE skills.
http://www.practicalcatia.com/