I was looking in Mozilla labs a couple of months back and I found a cool new plugin for Firefox called Ubiquity. It’s quite an exiting development for Firefox in my opinion. It is exiting because it has unlimited possibility. It brings interesting and useful things in a very accessible way just by pressing (ctrl + space on your keyboard). It does translations, maps, email, twitter and a lot more because you can extend it to suit what you want it to do.
What I find most interesting is how it could be extended to your desktop well maybe not Windows but maybe Ubuntu.