SlimFTPd is a simple (although somewhat basic) FTP program that does not even require installation (though, you have to edit the.conf file with which it is equipped to establish the precise characteristics of each FTP connection that we include).
Otherwise, SlimFTPd is equipped with the usual FTP options: Access password for each FTP account, being able to resume file uploads in case they break while they are uploading, save in a log file all the activity that occurs (and possible incidents), queue where the files that are uploaded, ease of use, etc. are stored.
You can free download Slim FTPd 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.