Sometimes you need to be sure that your FTP transfers are not going to get hijacked or intercepted by a third party. Most FTP applications are not designed for secure transfers over SSL which is why WinSCP was developed.

For starters, be warned that WinSCP is not the easiest FTP client to use. Because of the extra security features, it can appear overwhelming at first although it does feature a graphical user interface. It also supports integration with Windows in terms of drag & dropping files, pasting in URL's and shortcuts.

The key to the program is the fact that it supports both SFTP and SCP protocols over SSH-1 and SSH-2. Of course, it also supports normal FTP protocols too. It also features full support for SSH password and Kerberos (GSS) authentication. A particularly nice little addition is the Session Saving option. If you want to save your session configuration, you can use the save button on the login dialogue. In this way, you can make huge FTP file transfers and not worry about stopping and completing it later.

This is not the most user friendly FTP client out there but it must be one of the most secure. If security is your concern, you won't be disappointed by what it offers.