[tomaac]

https://cyberduck.io/

They have some issues with SSL certificate, though.

[pix64]

Cyberduck refuses to implement a two pane interface with a local browser.

https://trac.cyberduck.io/ticket/2778

Juggling multiple windows is really annoying. The entire UI is awful besides that also.

[jmnicolas]

I don't know why you were downvoted, will check it, thanks.