pdtpd is a server for the Peer Distributed Transfer Protocol (PDTP),
a BitTorrent-like protocol with stricter server control and support
for exporting large, changing hierarchical filesystems (i.e. more akin
to HTTP/FTP).

For a more thorough description of PDTP, see http://www.pdtp.org/.

WWW: http://pdtpd.sourceforge.net/