Prod keeps you away from distracting websites until you have finished your tasks.
SelfControl allows you to block websites and almost everything on the Internet for a set period of time on your Mac.
KeyFreeze blocks your keyboard and mouse so your toddlers pressing any keys won’t affect your machine.
3P Request Blocker blocks all third-party requests being sent from your browser to prevent unauthorized connections.
DuckDuckGo Privacy Essentials extension adds a privacy protection layer to your website browsing sessions.
Procrastination is a big issue and the PawBlock extension helps you avoid it by blocking distracting websites to help you focus on work.
If your PC gets turned off by random apps, shutdownBlocker will help you prevent it by disabling shutdowns.
Are the notification badges on the dock icons bothering you while in DND mode? Undisturbed will help you get rid of them.
If you believe your computer is being used to mine coins when you visit certain links, install the NoCoin extension in your browser and it will block the mining of coins in your browsing sessions.