Apache Vysper vysper XMPP Server 2007-4-27 completed Bernd Fondermann 0ee373f155b6614a61264929a06a0f302dd7d557 Gerolf Seitz Java XMPP Extensible Messaging and Presence Protocol (XMPP): Core IETF XMPP Extensible Messaging and Presence Protocol (XMPP): Instant Messaging and Presence IETF