FileZilla - FileZilla is an FTP, or file transfer protocol, client. It lets individuals transfer single files or batches to a web server. For many years, FTP was the standard for website design. Read more about FileZilla.
FileZilla Server - Download FileZilla Server 0.9.60.2 for Windows
Transmit - Transmit is an FTP client for Mac OS X and Mac OS Classic (which is unsupported).
vsftpd - Very secure FTP Daemon, a secure, fast FTP server for UNIX systems, including Linux.
CuteFTP - CuteFTP is a file transfer software engine that provides secure, simple, and powerful file transfers for people all over the world. CuteFTP is a multi-platform software available for Windows and Mac OS. Read more about CuteFTP.
Baby FTP Server - The simplest FTP server to setup. No authentication required.