What is XMPP? What is jabber?
Extensible Messaging and Presence Protocol (XMPP) is an open-standard
communications protocol for message-oriented middleware based on Extensible
Markup Language (XML). Early on, this protocol was called jabber and it was
meant for near-real-time, extensible instant messaging (IM), presence
information, and contact list maintenance. Designed to be extensible, the
protocol today also finds application in Voice over Internet Protocol and file