Phex is a free file sharing program running on the Gnutella Network.
Additionally to plain worldwide searching, downloading and sharing files, it enables you to
create private networks
distribute files decentrally
send your file-list to your friends
Phex is written in Java, so it runs on Windows, MacOSX and GNU/Linux, as well as on every other plattform which supports a Java VM.
It is free software and distributed under the GNU General Public License (GPL).