The Magic Dots Beeper is a little HTML5 file, which beeps every 6 minutes. It helps you use the Magic Dots technique, which uses Quasi-Reinforcement to help you get things done. The idea is to draw a dot or a line on a paper every 6 minutes, while working on a task. This will give you a motivating feeling of progress.
You can use it here: http://julius.github.io/MagicDotsBeeper/
You can read more about the technique here: http://blog.sethroberts.net/2012/07/04/magic-dots-quasi-reinforcement-helps-get-things-done/