Active Call Center
IVR software for Windows telephony. Features a visual depiction of call paths, automated inbound and outbound calls, and easy to learn user interface.
PC-Telephone.com
Enables all normal full-duplex telephone operations and provides call scheduling, waiting, forwarding, transfer, accounting, conferencing, recording, and encryption features.
SpeakBlast
Offers telephone broadcasting service, automated calls, inbound/outbound IVR, API, telephony scripts and more.
VocalTec
Offers carrier-class multimedia and voice-over IP solutions for communication service providers.