PHP version of Google's phone number handling library
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
The most affordable CRM system according to Capterra
Unified Communications Server
Unified Communications System - PBX System
Cellular manager for mobile phones/modems
Asterisk based VoIP pbx appliance
Online Internet Phone Call Center Software For Telesales Team
Webface witch extract CDR (Call Detail Records) from MySQL base.
VozBox. Asterisk VoIP PBX.
Cyber-wrt pbx is embedded system in DD-Wrt router
OpenSource Call Center and Dialer System
1 on 1 Webcam Videochat Script with P2P Support