Jabber

Amessage Jabber services
Public Jabber server that offers IPv6 based connections and the normal IPv4 connections.
http://web.amessage.info/

IceWarp Instant Messaging Server
XMPP server implementation with gateways to public networks, integrated with email, groupware, FTP and web server for single sign-on and simplified administration. Shareware/Commercial.
http://www.icewarp.com/products/instant_messaging/

Jabber Australia
Small group of Jabber enthusiasts looking to promote the use of Jabber to Australians. Providing public Jabber server, chatrooms/conference server and web discussion forums.
http://www.jabber.org.au/

Jabber iconset collection
A website devoted to collect jabber iconsets (jisp-files).
http://jisp.netflint.net/

Jabber IM Hosting Services
Web hosts that cater to Jabber server hosting.
http://www.jabberhosts.com/

Jabber Luxembourg
Promoting Jabber technology in Luxembourg using JAJC client.
http://www.jabber.lu/

JabberLive!
Features a community website with user profiles and people search.
http://jabberlive.org

JabXPCOM
An LGPL licensed XPCOM component providing access to Jabber. Implemented as a wrapper around the C++ jabberoo library.
http://dev.cmeerw.org/taxonomy/term/1

JaIM.at
Public Jabber / XMPP server with MSN Yahoo AIM ICQ mail and SMS gateway.
http://jaim.at/

Kaivo Jabber Training
Kaivo offers several training courses for aspiring Jabber client developers.
http://www.kaivo.com/Kaivo/jabberSplash

MacJLib
A Macintosh C++ library for communicating with the Jabber server. Covered under the LGPL. With current or planned support for OS 7.x, OS 8, 9 and OS X.
http://macjlib.sourceforge.net/

Ralphm.net
Personal web site of Ralph Meijer, containing interesting Jabber powered applications, like Jabber World map.
http://www.ralphm.net/?language=en

Tipic instant messaging platform
TIMP is a commercial Jabber server offering integration to LDAP / Active directory and MS Exchange.
http://www.tipic.com/

XMPP Federation
List of Jabber/XMPP servers officially registered with the XMPP Federation.
http://www.xmpp.net