FlashFXP
Recommended FTP Client - Version 3.4
Filesize: 4.08 MB

FTP surfer 1.0.7
FTP Surfer is a professional FTP client featuring an Internet Explorer style user interface including an address bar, history, and favorites menu. Features include multiple server connections, drag-and-drop, server file editing, smart reconnect for unreliable connections, find files, find-in-files, HTTP downloads, 'execute FTP commands directly', and 'Send To' menu support.
Filesize: 911 kB

Leech FTP 1.3
"FTP client - Not in your directories, but very good product! LeechFTP has a feature to check for updates from within the program, you can access this in the Tools menu. A small dialog will show up and tells you wether there is a newer version or not. This is done by connecting to this server, so you have to be connected to the internet."
Filesize: 638 kB

Putty
PuTTY.exe is a program that makes Windows users establish a secure connection to Unix (and Linux) terminals, among other things.
Filesize: 422 kB