Timerdoro is described as 'A simple timer for pomodoro, eye strain, GTD, working out, and just about anything else! Improve your productivity, and your health' and is a Pomodoro Timer in the office & productivity category. There are more than 50 alternatives to Timerdoro, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and Android apps. The best Timerdoro alternative is Flowkeeper, which is both free and Open Source. Other great sites and apps similar to Timerdoro are FocusTide, Pacelock, Time Out and YAPA-2.