Tomato Timer - TomatoTimer is a flexible and easy to use online Pomodoro Technique Timer
Cold Turkey - Cold Turkey is a free productivity program that you can use to temporarily block distractions so that you can get your work done!
Tasklog App - Tasklog App is an agile productivity software designed to meet the needs of current world freelancers.
Stay Focused - More suitable with Google Chrome, this service enables you ensure you do not waste precious time on updating Facebook status or chatting with people.
YAPA - Pomodoro timer
Freedom.to - Freedom is a productivity hack that lets you block apps, websites or the entire Internet on iPhones, iPads, Windows and Mac computers.