VICIdial Contact Center Suite
Cellular manager for mobile phones/modems
Open source CSTA library
Web based system for Computer Assisted Telephone Interviewing (CATI)
Software per Call Center
Unified Communications Server
Unified Communications System - PBX System
Guest WIFI and SMS Marketing Kiosk System
Java VoIP Softphone (SIP) (replaced by jfPhone)
High performance, production quality STUN server and client library
AstCDR
Accent interfaces and controls systems through goals and policies
Enterprise telephony recording and retrieval system
Multi user address book application accessable through the web.
H.323 Gatekeeper for VoIP and videconferencing
Cress is a comprehensive toolset for graphical service/workflow design