FTPUSE is a very simple program. Once installed you use the command prompt or .cmd files to map FTP servers to drive letters in Windows. It does not support any sort of FTP(s) but does support Username and Password logins.
"The FTPUSE command maps a remote share (FTP server) as a local drive, so you can use the FTP server of your choice as a local hard drive. FTPUSE is a free application which was developed during production of the endpoint backup solution Ferro Backup System, but disks mapped using FTPUSE can be accessed by any application (e.g. Windows Explorer, Total Commander, MS-DOS command shell)." -- http://www.ferrobackup.com/map-ftp-as-disk.html
Also I noticed it did not refresh unless you re-mounted, so perhaps .CMD files to re-mount easily. I don't use FTP a lot, but this could be very useful in a business environment that uses FTP.