Tomighty is an excellent desktop timer tailor made for when you use the Pomodoro Technique.
The Pomodoro Technique is a simple way to boost your productivity when performing mind-consuming tasks. It helps you keep yourself focused while reducing mental exhaustion
Tomighty has as default 25 minutes for the Pomodoro work-session, 5 minutes for the short break and 15 minutes for the long break. You can change this if you want but it works really well.
Just start the clock for a Pomodoro, focus on your work and 25 minutes later the timer goes off. Select a short or long break, I suggest you leave the computer during the break. Once the break is over the timer goes off again and it’s time for another Pomodoro.
Read more about The Pomodoro Technique – manage your attention.