1)   IVM Telephone Answering Attendant 4.03
IVM is a telephone answering machine, voice mail, phone attendant and interactive voice response (ivr) program for Windows computers with voice modems or professional telephony line devices.

 2)   CT Developer Studio 2.0
Integrate computer with telephony quickly and easily. Develop and run IVR applications on your Windows PC. IVR software development should not be difficult! CT Developer Studio helps you develop and host automated call handling systems.