I'm surprised there's still a market for innovation in FTP clients. Most everyone I know does automated deployments now with Heroku, AppEngine, git push, etc..
There are many workplaces (newspaper design desk) where FTP is still the goto for sending files too big for email. Any tools to makes the experience as simple as possible are more than welcome.
It does sftp too, which is a very nice filetransfer lingua franca kind of. Samba etc. are a pain to deal with so I tend to just use sftp for everything, even within the office.