Works well. Recently updated. Pay attention that it works ONLY for bookmarks added AFTER you install addon (it ok use it).

Bravo! Five stars, It works! Why Firefox hasn't added an option to sort bookmarks by date in order have the most recent bookmarks appear on top is beyond me, but that's Firefox for you. Fortunately we now have catalanl's nifty little Sort Bookmarks By Date Add-on which corrects this oversight. Thank you, catalanl.