FocusGeek
Block distracting websites and stay focused, free
Block the websites that eat your day. Block them all the time, on a schedule (like weekdays 9 to 5), or only while a focus timer runs. Blocked sites show a calm page with the time left, instead of the feed you were about to scroll. Everything stays on your computer.
A free, open source browser extension for Chrome, Microsoft Edge, Brave, Opera, Vivaldi and Firefox, from TechyGeeksHome. No account, no tracking, nothing to pay.