Something like 3 years ago I made a game called PowPow that let a bunch of players use a browser to connect to a game and use their browser as the controller. Either a desktop or a smartphone browser could be used.
Back then I thought, "You know, I should really make a library out of this" but one thing lead to another and I what do you know, 3 or more years have passed.
Well, I finally got around to it.