The most affordable CRM system according to Capterra
High performance, production quality STUN server and client library
Enterprise telephony recording and retrieval system
Multi user address book application accessable through the web.
H.323 Gatekeeper for VoIP and videconferencing
Microscopic AGI framework.
JAvascript Voicexml InterpretER
Webface witch extract CDR (Call Detail Records) from MySQL base.
Baresip is a modular SIP User-Agent with audio and video support
Optimized and cross platform SMPTE 2022 FEC library in C, Python, Java