MulticastCommunicator is a multicast-based peer-to-peer instant messenger, which allows rapid file distribution, text chat and data exchange within a multicast group, e.g. a LAN. It is written in Java and uses an easily-extensible message chain concept.
HDCIM is an instant messenger for HDC users to exchange info, the IMs will travel encrypted with public key encryptions technologies. The instant messenger will be built for Windows and Linux, but it will be written for maximim portability