BamNet - Seller of DataCAD software also provides DataCAD support archives viewable online.
Cheap Tricks - A postal newsletter for DataCAD users.
DataCAD LLC - Software for architecture. Product, support and sales information, architectural gallery.
dhSoftware - DataCAD macros available from dhSoftware.
DraftCAD - DataCAD authorized dealer, training seminars and architectural drafting services for the AEC.
The DataCAD Roundhouse - News, links, and tips by an experienced DataCAD user.
The DataCAD Training Center - DataCAD classes for architects, builders, and interior designers, in Boston, MA.