Rated 4 out of 5 stars

I've wanted something like this for a long, long time. It's not quite up as functional as I'd like though. An option to choose left-clicking to open rather than revealing it by hovering would be one improvement. Also, bookmarks for me don't work for more than one folder tree, the root, until I re-hover and then sub-folders are displayable. Customising the length would be good as it's cutting off some of my bookmark folders and merging them into a drop-down arrow (even though my screen has room to display them all at once). Having the option for multiple rows and to set the position that the toolbar appears at could be desirable too. Overall: long overdue idea, not executed to the extent it should have been (yet, hopefully!). Partially functional (though I may have some conflicting addons) but not functional enough for daily use. Please improve! (: