Desktop communication tool: chat, telephony, multimedia
Java VoIP Softphone (SIP) (replaced by jfPhone)
H.323 Gatekeeper for VoIP and videconferencing
SIP Video Multiconference Media Server with WebRTC support.
Cress is a comprehensive toolset for graphical service/workflow design
Java VoIP/SIP PBX system (replaced by jfPBX)
Optimized and cross platform SMPTE 2022 FEC library in C, Python, Java