Giau ten is a 3rd generation filesharing system which is developed by some students.
It will be extremly modular so every thing can changed by others or you can replace for example the gui if you like a other one more.
Unico is a multi-network peer-to-peer filesharing client with a very simple interface. It runs on every operatingsystem, and searchs for files on EMule, Gnutella2, DirectConnect and OpenNap networks. It can also find and download Torrents.
Alternator is a powerful Direct Connect client written in C# with new features such as encryption and remote access as well as a full-feature plugin system. Alternator is written to allow for development on other Operating Systems besides Mac OSX.