AnyClient is a web based FTP client, it’s also available as a desktop client (for those old school users out there).
It’s java based and needs a little installing to get going but it’s handy and I can see it’s benefits.
i.e if you need to take care of a a quick upload or download while away from your computer (or if you’re like Tommy Vallier and are trying to not based anything on your computer)
It’s simple to use, fairly intuitive and free.
Check it out at AnyClient.com