Mobicents is the leading Open Source VoIP Platform. It is the First and Only Open Source Certified implementation of JSLEE 1.1 (JSR 240), and SIP Servlets 1.1 (JSR 289). Mobicents also includes a powerful and extensible Media Server.
EtherPipe is a server for Multimedia-Metadata as central library for local (inhouse) lans media-server solutions. Serverside uses JavaEE/GWT/(/MySQL), Clientside uses Google GWT. The project is currently in rework - please visit again in October 2010
XJMS runs within the open-source J2EE app server jboss (www.jboss.org). XJMS provides cataloging, browsing, and playback of media sources such as MP3 and CDs via the Nirvis Slink-e. XJMS provides the core services for a set-top box media server design.