Jabber.ORG (development): http://docs.jabber.org/
Jabber.COM (commercial interface): http://docs.jabber.com/
Jabber Central (community and news): http://jabbercentral.com/
Jabber Technical Overview: http://docs.jabber.org/general/overview/
The Programmer#146>s Guide to Jabber: mmer#146>s Guide to Jabber: http://docs.jabber.org/jpg/book1.html
Jabber Documentation: http://docs.jabber.org/
Jabber IETF Submission: http://docs.jabber.org/draft-miller-impp-jabber-00.html
Jabber Technical Whitepapers http://www.jabber.com/downloads/whitepapers/jabber_tech_whitepaper.pdf