I can't believe that I have managed to survive until now without this!
Do you ever get lost in your web pages as you have so many open and you cannot find the one you want? Well, this is the answer. Image all you have to do it click on an icon next to the Home button and you can see every single page in one go (see above example - NB This is for Firefox only). Then click on that picture, and there you are. This is soooooo wonderful. It is not surprising nearly one million have already downloaded it.