XMPP is a set of open XML technologies for presence and real-time communication, extended through the standards process of the XSF.
remko groups
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xmpp
XMPP and the XSF
http://xmpp.org/
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im
Instant Messaging
Internet
http://en.wikipedia.org/wiki/Instant_messaging
Instant messaging, the predecessor to microblogging & still a widely used method of personal communications on the internet
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prosody
Prosody XMPP Server
http://prosody.im/
Group for developers and users of Prosody, the Lua Jabber/XMPP server
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xs
XMPP Summit
http://xmpp.org/summit/
The XMPP Standards Foundation holds a developer conference twice a year, usually co-located with FOSDEM in Europe and OSCON in North America