Focus on the task at hand

Only allow access to websites that are approved for the task at hand. Blocks any website that is not relevant.

No workarounds

It seems impossible to block the endless amount of distracting websites. Not anymore with browserfocus. It is also possible to force the extension to be on your browser for Linux.

Easy to use + No tracking

Simple to whitelist only the websites you need for the current task. Regular installation is also not difficult. Open source and it does not track you.