Unified Communications Server
Accent interfaces and controls systems through goals and policies
H.323 Gatekeeper for VoIP and videconferencing
SIP Video Multiconference Media Server with WebRTC support.
Java VoIP/SIP PBX system (replaced by jfPBX)
VozBox. Asterisk VoIP PBX.
Universal Framework to audit Voip protocols's security
Send Asterisk CDR to serial device
A Skin for Mumble
Web interface for OpenSIPS
C++ SIP stack based on Chrome source code