FileZilla

FileZilla is a powerful ftp client server, it contain many useful features. It is open source software distributed under the terms of the GNU General Public License .Filezilla is fast and contain a lot of useful features .It is Available for download for free for platforms (windows , linux ,Mac os X ) .

• Easy to use
• Supports FTP, FTP over SSL/TLS (FTPS) and SSH File Transfer Protocol (SFTP)
• Cross-platform. Runs on Windows, Linux, *BSD, Mac OS X and more
• IPv6 support
• Available in many languages
• Supports resume and transfer of large files >4GB
• Powerful Site Manager and transfer queue
• Drag & drop support
• Configurable Speed limits
• Filename filters
• Network configuration wizard
• Remote file editing
• Keep-alive
• HTTP/1.1, SOCKS5 and FTP-Proxy support

Small ftpd
Small ftpd is a small and simple muli-threaded ftp server for windows.Smallftpd's original feature is that you can specify a hostname (such as login.dyndns.org) to be resolved and used for passive mode. That enables ADSL users with a dynamic IP to be able to run a ftp server at home.

Java Secure FTPd Server
jFTPd is a free, pure java FTP server and runs on almost every platform where Java VM is available. Currently it runs on Microsoft Windows, Sun Solaris and Linuxes. It needs JDK 1.5 to run.
It was initially designed with simplicity in mind FTP. However, it evolved in time to become a highly stable FTP server (thousands of connections per day) with huge uptime (in fact it runs as long as the machine runs).

mftpd
This is a FTP server which runs on a PalmOS device. You can use it together with a FTP client on your desktop computer in order to transfer files to and from your device