» ArchiCAD Webring    A list of ArchiCAD related sites.    http://x.webring.com/hub?ring=archicad

» ArchiRADAR    Resource site for ArchiCAD users, with GDL objects, and a mailing list. [more information in Italian language]    http://www.archiradar.com/

» GDL Alliance    An independent, international professional association consisting of GDL authors, software developers, and building product manufacturers.    http://gdlalliance.com/

» Graphisoft R&D Software Development Rt.    The developers of the architectural CAD software ArchiCAD and the facility management system ArchiFM.    http://www.graphisoft.com/

» Integrated CADD Services    Provides ArchiCAD based solutions for architects.    http://www.intcad.com/

» arkiKlub    A resource site for ArchiCAD users, including tutorials, tips and tricks, downloads, online support, and discussion forums for registered members.    http://www.arkiklub.com/