The Pomodoro Technique is a time management method, which works as a simple tool or process for improving your work ability. Basically it is a timer, developed on the belief that frequent breaks can improve mental agility. You can embed Pomodoro Technique in Google Chrome with a little extension called Chromodoro.
This time management tool can be useful where you work in cycles. If you are not familiar with the Pomodoro Technique, you may go here to know more about it.
You can install Chromodoro Chrome extension from Chrome Web Store