Hi. This was made by @antimatter15, in other words, me. Because I don't really like writing about myself or at least, I think I nailed narcissism with the last project's about page, so I'll just copy and paste it here.
The source code is available on github. A totally irrelevant fact is that at time of writing I'm 15 years old, but that tends to make people treat this as more of an accomplishment than it really is and thus more inclined to share it. So now, aware of that magical fact, you should follow me on twitter and share this extension with all your peers.