VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
High performance, production quality STUN server and client library
SIP softphone
H.323 Gatekeeper for VoIP and videconferencing
Simple and efficient tool for SIP trace filtering
Microscopic AGI framework.
Fast CGI-based AsteriskPBX cluster administration tool.
Small and effective program for SIP traces anonymization
GSM L1-L3 stack with SIP network interfaces
C++ SIP stack based on Chrome source code