Gnunet is a peer-to-peer framework which focuses on providing security. all link-to-link messages in the network are confidential and authenticated. the framework provides a transport abstraction layer and can currently encapsulate the peer-to-peer traffic in udp, tcp, or smtp messages.
this package contains the graphical client, using the qt toolkit. in order use gnunet, you also need gnunet-server either on your server or on your local machine.