The 4.0.61110 version of ConferenceXP Client is provided as a free download on our website. ConferenceXP Client lies within Communication Tools, more precisely General. The default filename for the program's installer is CXPClient.exe. The most popular versions of the software are 5.0 and 4.0. This free software is a product of Microsoft Research.
From the developer:
ConferenceXP is an open source videoconferencing platform that is designed to address the needs of academic distance learning/multi-institutional instruction and advanced collaboration scenarios.
By integrating high-performance audio, video, and network technologies, ConferenceXP seamlessly connects multiple, distant participants in a rich, immersive environment for conferencing, instruction, and collaboration.
ConferenceXP provides an extensible foundation for interactive collaborative environments and serves as a research platform for designing and implementing distance conferencing and learning applications.
You may want to check out more software, such as eM Client or Parrot BitTorrent Client, which might be similar to ConferenceXP Client.