AllBookmarks 

AllBookmarks adds a new item to your Mac OS X menu bar giving you quick access to all your bookmarks. All your Safari, Firefox and Flock bookmarks are shown and can be selected. AllBookmarks also gives you accesses to your 1Password 1Click bookmarks so you can navigate to a page, fill the form, and submit it, all with a single click!

http://agilewebsolutions.com/products/AllBookmarks