FileZilla Server - Download FileZilla Server 0.9.60.2 for Windows
Xlight FTP Server - Xlight FTP Server is a high performance and easy to use ftp server software for Windows.
vsftpd - Very secure FTP Daemon, a secure, fast FTP server for UNIX systems, including Linux.
Baby FTP Server - The simplest FTP server to setup. No authentication required.
ProFTPD - The Official ProFTPD web site. ProFTPD is a high-performance, extremely configurable, and most of all a secure FTP server, featuring Apache-like configuration and blazing performance.
WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.