Red5chat is an opensource project of a video chat written in Action script AS2 (flash7) using the RED5 flash server. It allows private/public chat with audio and video through an Flash interface
wxVCL is a set of wxWidgets Classes that gives the same functionality as Borland Visual Component Library (VCL).
Xface is a set of open source tools for creation of MPEG-4 and keyframes based 3D Talking Heads controlled over network with SMIL-Agent scripts.
xmessage is a powerful message queue,you can do it in your IPC project.