WinSCP is described by its author as
WinSCP is an open source free SFTP client and FTP client for Windows. Legacy SCP protocol is also supported. Its main function is safe copying of files between a local and a remote computer.
It is a very robust and feature rich FTP client that supports secure file transfer using SSH over FTP. It has many of the usual and expected features like integration into Windows for such operations as drag and drop and insertion into the Send To context menu. Additionally in can be used via the command line to perform many