Some days ago I read a very nice document explaining the technology behind the Jabber system. I have to admit that the specifications of the Extensible Messaging and Presence ProtocolÂ (XMPP) nicely impressed me! Making XMPP one of the few Internet standard IM protocol approved by the IETF is the fact that definitely convinced me to build a FreeBSD jail and begin testing some Jabber servers. I’m focusing on the Openfire product, which seems to be really enterprise-ready: I’ve been able to connect it to Active Directory and to the MSFT Live Messenger public IM service in a snap! I’m also interested in ejabberd, which seems to support all high-quality features that an hosting provider needs (as the clustering support): maybe it would be a building block of the Phoibos service infrastructure.