FileCOPA - Secure FTP server with SSL support. Compatible with Windows 98/Me/2000/XP/2003 and Vista. - http://www.filecopa-ftpserver.com
Titan FTP Server - Titan FTP Server is an enterprise class server product. - http://www.titanftp.com/
ShareIT for Windows - Secure FTP server for Windows. - http://www.noisette-software.com/products/windows/ShareIt/
Winsock FTP Daemon - wftpd is a basic FTP server with quite a bit of configuration options. Platforms: Window 3.x/95/NT. - http://www.wftpd.com/
War FTP Daemon - Configurable free FTP Daemon with security options. Platforms: Windows 9x and NT. - http://www.jgaa.com/
Serv-U - Widely used commercial Windows FTP Server. - http://www.serv-u.com/
GuildFTPd - This Windows FTP server features plug-in and network support. It has the ability to set each login to a different port and provide log statistics. You can review graphs of past connections and control the speed of your uploads and downloads. - http://www.guildftpd.com/
Gene6 FTP Server - Secure FTP server with SSL for Microsoft Windows 2000/XP/2003. - http://www.g6ftpserver.com/
Eserv FTP Server - Complete solution to access internet from LAN. Mail server (SMTP and POP3), news server (NNTP),web server and FTP server. - http://www.etype.net/
BulletProof FTP Server - Full featured server for Windows. - http://www.bpftpserver.com/
Broker - A FTP server for Windows. Web-based control and configure interface. - http://ftp-broker.com/view_content.asp?ID=7