SelfControl is a free and open-source application for Mac OS X that lets you block your own access to distracting websites, your mail servers, or anything else on the Internet. Just set a period of time to block for, add sites to your blacklist, and click "Start.

Block distractions on Windows, Mac, and Android with FocusMe's Blacklist, Whitelist, Time Tracker, Scheduler, Pomodoro Timer, and security features like Password Protection and Forced Mode to boost productivity by customizing user feedback-based settings.

Pause before opening a distracting app.

Be incredibly focused and productive. Join millions of amazing people who use Freedom to manage their screen time and live happier, healthier, and more productive lives.

Limit the usage of Android phones easily.

Focus is a Mac app that blocks distracting websites and applications so you can get peace of mind, and get some work done!.

StayFocusd is a productivity extension for Google Chrome that helps you stay focused on work by restricting the amount of time you can spend on time-wasting websites. Once your allotted time has been used up, the sites you have blocked will be inaccessible for the rest of the...

1Focus lets you block distracting apps and websites to skyrocket your productivity. Beat procrastination and get things done by focusing on one task at a time. Ideal for students, entrepreneurs, and creative people.

Stay focused helps you focus by restricting the daily usage of selected apps to the selected time. Spending too much of time Social Networking or Messaging Apps? Focus it and it will help you reduce the usage.

Activate a truly focused experience on macOS.

PoD(Price of Distraction) is the only chrome extension which could help you stay focused and improve your efficiency during pomodoro immediately. Yes. we said 'immediately'. Not like other extensions(e.g. StayFocusd) simply run as website blocker, PoD is much powerful: