http://www.ozemail.com.au/~ptrkelly/agi - Sierra Classics - AGI (by Peter Kelly)
http://agisci.cjb.net/ - The Ultimate AGI & SCI Web Site
http://weremoose.tripod.com/Tutorials.html - AGI tutorials
http://mega-tokyo.com/sarien/ - Sarien the Alien AGI Interpreter
http://agi.helllabs.org/ - Sarien for Unix/X11
http://www.helsinki.fi/~terho/agi.html - AGI stuff by Juha Terho
http://www.algonet.se/~jmoller/sierra/ - The Sierra Adventure Hacking Paradise
http://members.xoom.com/agi_filedump/ - AGI Filedump
http://eds.org/~david/agi/ - David's AGIPhile Page
http://agidomain.cjb.net/ - Ice's AGI Domain
Detailed information on file formats, interpreter operation and logic programming is available in the AGI Specs documentation, available from http://www.ozemail.com.au/~ptrkelly/agi/specs