Lightweight, fast and secure FTP server

Pure-FTPd is a fast, production-quality, standard-comformant FTP server,
based upon Troll-FTPd. Unlike other popular FTP servers, it has no known
security flaw, it is really trivial to set up and it is especially designed
for modern Linux and FreeBSD kernels (setfsuid, sendfile, capabilities) .
Features include PAM support, IPv6, chroot()ed home directories, virtual
domains, built-in LS, anti-warez system, bandwidth throttling, FXP, bounded
ports for passive downloads, UL/DL ratios, native LDAP and SQL support,
Apache log files and more.
Rebuild switches:
--without ldap     disable ldap support
--without mysql    disable mysql support
--without pgsql    disable postgresql support
--without extauth  disable external authentication
--without tls      disable SSL/TLS