Note: This app used to be called Safari
Bookmarks Menu allows you to access all of your Safari bookmarks from a system wide menu.
There is no need to have Safari open as Bookmarks Menu has an integrated web browser. You can of course open the bookmark in Safari if you'd like.
You can also easily search the web by using the integrated Search window.
Disclaimer: Bookmarks Menu requires you to have all of your bookmarks in the Safari web browser, it does not work with other web browsers. Bookmarks Menu does not modify your Safari History nor can it be used to organise your bookmarks.