Download here http://winscp.net/eng/download.php
What is WinSCP? - 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.
What is FTP client for? – Used to connect the local PC to the remote FTP server. It’s still a tool of choice for webmaster to transfer their files back and forth the web hosting. Life as a webmaster is not complete if you don’t master this tool.
WinSCP latest version 4.1.8 is still open source and licensed under GNU GPL. I’ve just upgraded my WinSCP, and still testing it, before I do any review.