Clients

There are lots of free clients you can use to connect to any Jabber server.

Apple MacOS

 * Adium
 * iChat
 * Psi

Linux/Unix

 * Gajim
 * Gossip
 * Kopete
 * Pidgin
 * Psi
 * Spark

Web Browser

 * JWChat
 * SamePlace
 * SparkWeb

Windows

 * Exodus
 * Miranda IM
 * Trillian Pro