The author of this library wrote an article about how it was built with some new demos at http://flippinawesome.org/2013/09/23/creating-a-realistic-rain-effect-

The author of this library wrote an article about how it was built with some new demos at http://flippinawesome.org/2013/09/23/creating-a-realistic-rain-effect-with-canvas-and-javascript/ http://flippinawesome.org/2013/09/23/creating-a-realistic-ra...