Websites on ArchiCAD:
ArchiCAD Webring
A list of ArchiCAD related sites.
ArchiRADAR
Resource site for ArchiCAD users, with GDL objects, and a mailing list. [more information in Italian language]
arkiKlub
A resource site for ArchiCAD users, including tutorials, tips and tricks, downloads, online support, and discussion forums for registered members.
GDL Alliance
An independent, international professional association consisting of GDL authors, software developers, and building product manufacturers.
Graphisoft R&D Zrt.
The developers of ArchiCAD, a 3D architectural design software with 2D drawing and layout functions for architects, interior designers and structural engineers.
Integrated CADD Services
Provides ArchiCAD based solutions for architects.