Chief Architect

Advanced Relational Technology, Inc.
Developers of the Chief Architect 3D architectural design software, offering technical support, training resources, and discussion forums.
http://www.chiefarchitect.com/

Chief Architect Users
An independent discussion mailing list for users of the Chief Architect software.
http://tech.groups.yahoo.com/group/chief-users/

Chief Commercial
Provides Chief Architect compatible 3D Cad symbols of commercial equipment and furnishings. Includes online catalogs and pricing.
http://www.chiefcommercial.com/

Chief Symbols
Source of Chief Architect add-on symbol libraries and a user-created symbol exchange.
http://www.chiefsymbols.com/

Design Build Technologies
Dealer and developer for a variety of products.
http://dbtec.com