Great (and Free) SFTP/FTP Client for Windows

A friend told me about this great, freeware SFTP client for Windows called WinSCP. For an RIA project that resides on a Solaris box, this tool came in quite handy, with drag-and-drop capabilities from WinXP Pro. Lots of cool built-in features, including the ability to set permissions on uploaded files. Very useful when uploaing to a Unix box; even lets you set the permissions in octal.