Focus - New Tab page that gives you a moment of calm and inspires you to be more productive.
uBlock Origin - Popular and efficient blocker for Chromium, Chrome, Edge, Firefox, Opera, Safari, Thunderbird.
UnDistracted App - Use social media in a useful way. Control Facebook, YouTube, Twitter, Reddit, Netflix and LinkedIn in a responsible way.
Adblock Plus - AdBlock Plus is a browser extension for Firefox, Chrome, Opera, and several other popular browsers that prevents intrusive ads like pop-ups and malicious code from appearing on websites you visit.
Deprocrastination.co - Turn your browser into a calm, lean productivity machine
AdGuard - Surf the Web Ad-Free and Safely. Shield up!