I’ve been using this bookmark manager since power PC and Classic days, love it! No matter which browser tickles my fancy, my bookmarks are always available. I particularly like it with the Camino browser because when I click on a bookmark in the handy drop-down menu, it automatically opens the URL in another tab, without any extra modifier keys, and it does not write-over the other tabs I have open.
Richard Trueman about URL Manager Pro, v4.0