VoIPerized 2.4 that could have been downloaded from our website for free. This free software was originally created by Jeroen de Kleijn. VoIPerized is included in Communication Tools.
From the developer:
VoIPerized is a so called VoIP (Voice over IP) program. VoIPerized enables you to make free audio calls to other people who also run VoIPerized. When making VoIPerized the focus was to minimize the latency, because other VoIP programs always seemed to have an irritating lag which makes the conversation seem unnatural. By using the open source Speex audio codec the audio quality is far higher than any normal telephone call.
You may want to check out more software, such as Rogers Yahoo! Applications, USRobotics Cordless Skype Dual Phone or WinPopup Speak, which might be related to VoIPerized.