List of FTP servers

Implementations of FTP servers include:

[edit] Graphical

Microsoft Internet Information Services — proprietary, Windows only, included in most versions of windows equal to or greater NT3.51. IIS is not included in Windows XP Home, ME, or 98 SE, however.
Fastream IQ Web/FTP Server — "totally free personal version and 30-trial professional version available as bundled in one program.", Windows only
Cerberus FTP — "free for personal use and not-for-profit charitable organizations", Windows only
ArGoSoft FTP Server — proprietary, shareware, Windows only. Some earlier version might have been freeware.
ALFTP — proprietary, freeware, Windows only. Personal FTP server.
CrossFTP Server — open source, free software, Windows, Linux, Solaris, and Mac OS X.
FileCOPA FTP Server — commercial, Windows.
FileZilla Server — open source, free software, WinNT 4.+/2K/XP only
GuildFTP Daemon server proprietary software, Windows only
PureFTPd — free software; Linux, *BSD, Mac OS X, Windows (experimental), et al.
Serv-U FTP Server commercial (Windows)
War FTP Daemon freeware (Windows)
Bulletproof FTP Server commercial (Windows)
WSFTP Server commercial (Windows) (IPSwitch)
G6 FTP Server commercial (Windows)
JSCAPE Secure FTP Server — free and commercial editions; Linux, Windows, Solaris and Mac OS X with support for FTPS, HTTP/S
GlobalSCAPE Secure FTP Server commercial (WinNT+) FTP/S, SSH, HTTP/S, Automation
freeFTPd — free, WinNT 4.+, supports FTP/S and SFTP
zFTPServer Free Windows FTP server, supports SSL

DrFTPD open-source (Java)
iFTPd open-source (Java)
MuddleFTPD
publicfile open-source (Linux, BSD, and more)
ProFTPD open-source (Linux, BSD, Mac OS X, and more)
Pure-FTPd open-source, default FTP daemon in many linux distributions (Linux, BSD, Mac OS X, and more)
SlimFTPd freeware (Windows)
vsftpd open-source (acronym for Very Secure FTP Daemon)
wu-ftpd open-source (Linux, BSD, and more)