Rated 4 out of 5 stars

Works for me even better than Filezilla and is easier and more useful in a browser.
My only point of criticism: it slows the rest of my browser down (even noticeably) -> freezes every few seconds while writing and stuff like that (while copying over a Gigabyte Lan Cable)

This review is for a previous version of the add-on (2.0.16.1-signed).