Pomodoro timer programs

Specific of pomodoro technique requires measuring of time and this can be done by different devices from mechanical timers to more complex software solutions.

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  Here is link on wikipedia page.
  This page contains information about 15 different pomodoro technique timers for different platforms including online timers.
  
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  Another link on productivity.stackexchange.com site.
  This site also has a lot of question-answers regarding pomodoro technique
  

Pomodoro technique game