WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.
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.
FileZilla Secure - A modified version of Filezilla dedicated to keeping your FTP passwords secure.
FTP Rush - FTP Rush is the most powerful and free FTP/FXP/SFTP/TFTP client sofware for Windows.
sFTP Client - Transfer files with FTP, FTPS, SFTP and Cloud Services (Including SSH Terminal)
Hitonic FTPSync - Fast file uploading from a local computer to an FTP server!