Is there an altenative that does not crash the browser periodically?

Love this extension. Simple and elegant, allows you to block multiple websites with different settings, all free. I've tried others and this one has the most features. Nothing unnecessary - just super useful. Use it to curb procrastination during the work day and to resist online shopping, etc. - the different settings and block times for different categories makes this possible and stops you from constantly changing the settings to get around it! Thanks!

Update: still using it over a year later, still works great!

Block them leeches!

It's one of the tools in my toolbox that keep my internet addiction in check (of course just installing one plugin isn't enough). But still... this tool helps me sooo much getting my work done. The configuration page is not that user friendly, but after a bit of fiddling around it's usable enough.

Easy to set-up and use, this addon helps quite a lot when one has to focus on a task but can't due to the great availiability of distractions online, such as Instagram, Youtube, etc.

This add-on absolutely saved my sanity in the face of an awful social media addiction. The ability to block options editing during a lockdown period is a lifesaver! I'll be making use of this for any and all online productivity needs from now on!

The best extension or program of this kind. It's free and open source and has good performance.

Amazing! I use it to block distracting sites in the morning, so I can get the most out of my morning productivity!

My only regret is that I didn't sign up for this sooner!

Awesome!! Saved my life!!!!!!

Very amazing app. Must install

Bagus

This extension really helps me control my social media addition. Thanks to the author!

Works like a charm, has all the features for free