Sorry for this late reply, but: FTP is so 20th century. Check out [link] it's secure, it support ssh key-based authentication, and it's a mounted drive, so it just on as soon as Windows starts. (For Linux there's just SSHfs, CIFSfs/SMBfs and NFS of course.)

CYberduck!!!!

Depends on the host server. Filezilla is free. FTP Voyager is over complicated and $$, and WSFTP is spendy for what you get, but it works.

They all have their hangups really. Filezilla lately and for the most part.

At work (i.e. on windows) it is total commander or the builtin one that ships with webmin.

On Linux/GNOME I use Nautilus, which is the native file manager, which, thanks to FUSE, has support for a thousand of file-systems; and that even though ftp is not a filesystem but just a transfer protocol. So basically, I don't need an extra [link] there, which is awesome

total commander... nicest ever :-D

WinSCP for me - very small, portable and efficient.

PSFtpFree

Transmit FTP

cuteFTP

CuteFTP

Fuer hand gebastelte batches nehm ich immer noch den cmd line ftp von Windows, obwohl CuteFTP da auch einiges bietet, habe mich damit aber leider noch nicht beschaeftigt und beim Windows FTP weiss ich halt wie es geht