Check out WASTE an open source secure group share. http://waste.sourceforge.net/index.php?id=informationhttp://waste.sourceforge.net/index.php?id=information
WASTE is an anonymous, secure, and encryped collaboration tool
which allows users to both share ideas through the chat interface and
share data through the download system. WASTE is RSA secured, and has
been hearalded as the most secure P2P connection
protocol currently in development.
