"TorrentFlux is a BitTorrent client that runs on top of a server
running Apache, MySQL, and PHP. It extends the functionality of
traditional clients by operating almost entirely through a Web
browser interface. It uses the BitTornado client in the background
to manage the queuing, downloading, and seeding of torrent files.
You can run TorrentFlux on your home machine and access it through
a folder on a Web server. You can also install it on an external
host to increase bandwidth and transfer speeds.
"BitTorrent is a peer-to-peer file sharing protocol that allows
users to transfer large files without a central distributor. Users
download files in small pieces from a variety of sources scattered
across the Internet..."