Unified Communications Server
Unified Communications System - PBX System
Java VoIP Softphone (SIP) (replaced by jfPhone)
Accent interfaces and controls systems through goals and policies
Baresip is a modular SIP User-Agent with audio and video support
survey research software integrate for CATI/ CAWI/ CAMI survey
Optimized and cross platform SMPTE 2022 FEC library in C, Python, Java
C++ SIP stack based on Chrome source code