The most affordable CRM system according to Capterra
Unified Communications Server
High performance, production quality STUN server and client library
Enterprise telephony recording and retrieval system
H.323 Gatekeeper for VoIP and videconferencing
Microscopic AGI framework.
Webface witch extract CDR (Call Detail Records) from MySQL base.
Universal Framework to audit Voip protocols's security
Go to github.com/vlm/asn1c for the latest version.