FileZilla is a free and high-performance FTP server software. Although it is free software, its functions are not weak at all. If you want to play a simple FTP server, then you can try this which consumes very little system resources. The software allows you to set up an FTP server easily and easily. It is even better than those shareware software and has many special functions.
New features: * Use thousands separator in output of large numbers.
Bugfixes and minor changes: * Disallow weak SSLv2. * Slightly reword FTP over TLS/SSL settings page * Adjust width of user and group lists on permissions dialogs.