High performance, production quality STUN server and client library
H.323 Gatekeeper for VoIP and videconferencing
A command line utility for remote controlling Polycom VVX IP phones
Baresip is a modular SIP User-Agent with audio and video support
A plugin for Teamspeak3. This plugin allows you to autofollow a user.
Optimized and cross platform SMPTE 2022 FEC library in C, Python, Java
C++ SIP stack based on Chrome source code