SylkServer
SylkServer allows creation and delivery of rich multimedia applications accessed by SIP Clients, XMPP endpoints and WebRTC applications. The server supports SIP and XMPP signaling, RTP, MSRP and WebRTC media planes, has built in capabilities for creating multiparty conferences with wideband Audio, IM/ File Transfers and can be easily extended with other custom applications by using Python language.
For more information visit the project web site at http://sylkserver.com