This is a fantastic blocker, where I can specify precisely what I want! The only thing that I'd wish for is more than 6 block-sets, so that I can be even more specific about what I want to do with each site.

A functional and helpful addon to design time saving restrictions on the web and to eradicate bad online habits

Simple, feature-rich, and very transparent - great add-on!

I've been using leechblock for years. Great functionality, really improved my productivity. I recommend it to all my students.

Oh, performance... After deleting this add-on a CPU usage becomes 0-3% again (but it was 30%!)

Reliable and doesn't slow down my browser experience/performance in any way. I've used LeechBlock for years and it has kept me from succumbing to meaningless web browsing. Thank for for being free and doing a great job.

I really like the extension. It has all of the features that I require. My only issue is that twice now it deleted all of the blocks, settings, that I wrote for it, so I had to start with it from the beginning. Both times happened after I did some update..

Update: It seems this has been fixed. 5 stars for an awesome extension which helps keep me productive

[Edited] Nice plugin which works as expected AND has good support. Note: For the override feature to work, be sure to enable "[X] Allow temporary overrides" in options. This has stumped me, but the dev looked into it and figured out my problem, which means extra points for support. :-)

Great addon, but not recommended for laptop users, as it seems to eat CPU. Loading up the about:performance tab shows LeechBlock consistently consuming huge amounts of CPU whilst doing nothing. Had to reluctantly uninstall it.

Excellent !!!!

Great - very useful to keep addictive websites at bay

Easy to set up and use. Life-saving aid to break addiction to social media websites.

it has everything i need. Block page and let me study. very good work

Best app

The best add-on if you want to stop getting distracted when you need to get work done. Very simple interface and super easy to use, have had no problems so far!