FocusMe by FocusMe Inc Ltd

This addon does not work standalone but is a connector to our desktop application.

Block distracting websites and apps or set time limits.
Time Tracker shows you how you spend your days.
Flexible blocking allows you to whitelist parts of a site but bloc the rest.
Pomodoro and Breaks features to stay focused and productive.
Stay protected even when your willpower gets low and you try to bypass your own rules!

Visit https://focusme.com to get the app.