BleepingComputer.com: Firefox most viewed addon?

Well, since I switched to my Mac I have been using Safari pretty religiously. I have grown tired of it's incompatibility with its web pages so I have decided to go to firefox again. Now, I was looking for an add-on for most viewed web pages? Something like Chrome and Safari uses when you open a new tab and it shows your most viewed pages.

Does anyone know of any add-ons like this? Any help will be much appreciated!