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 Protocol¬† (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.