Experiments with Telepathy
No, not that kind. Sorry.
"Telepathy is a D-Bus framework for unifying real time communication, including instant messaging, voice calls and video calls. It abstracts differences between protocols to provide a unified interface for applications."
Telepathy needs D-Bus, which is built in to Linux but not Windows. At one point this really mattered to me, but currently I use Windows only to run ArcGIS.
Telepathy from the Architecture of Open Source Applications