SFTP (Secure File Transfer Protocol) is used to transfer files from one computer to another over a network using secure encryption. Cyberduck is an SFTP program that is free to download and use. Cyberduck is available for Windows XP/Windows Vista/Windows 7/Windows 8.
To download Cyberduck, go to the web page at www.cyberduck.ch. Click the link on the Download button at the top of the page to download the latest version of the cyberduck.exe file for Windows.