Just a few Jabber/XMPP client libraries, some of which are suitable for mobile software development.
microJabber — a very lightweight Java XMPP client implementation, possibly suits for mobile apps
JXA — another lightweight library
emite — A GWT XMPP (jabber, instant messaging protocol) library.
Smack — one of the best known Java XMPP client libraries, from Openfire developers
Another implementation can be found in Bombus sources. Bombus is licensed under GPL which means that you can freely modify and redistribute it. SVN is at http://svn.xmpp.ru/repos/bombus/trunk .


