WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.
GNOME Commander - GNOME Commander is a "two-pane" graphical file manager for the GNOME desktop environment.
FileZilla - FileZilla is an FTP, or file transfer protocol, client. It lets individuals transfer single files or batches to a web server. For many years, FTP was the standard for website design. Read more about FileZilla.
FTP Synchronizer - Secure and high performance FTP File Sync product
PyroBatchFTP - PyroBatchFTP/SFTP helps you to exchange files with internet SFTP servers in an automated way by processing scripts. e.G. to automatically update documents on web servers.
cryo - A visual file manager