Pure-FTPd is a fast, production-quality, standard-conformant FTP server,
based upon Troll-FTPd.

Unlike other popular FTP servers, it's designed to be secure in default
configuration, has no known buffer overflow, it is really trivial to set up
and it is especially designed for modern kernels.

Features include PAM support, IPv6, chroot()ed home directories, virtual
domains, built-in 'ls', anti-warez system, bounded ports for passive
downloads, FXP protocol, bandwidth throttling, ratios, LDAP, customizable
SQL, fortune files, Apache-like log files, fast standalone mode, text / HTML
/ XML real-time status report, virtual users, virtual quotas and more.

WWW: http://www.pureftpd.org/