This is the best addon for site blocking ever. It has great features.

This addon helped me a lot to focus.

One of the best website blocking add-ons available for Firefox. Thank you !

Tried multiple other addons, enjoying now a distraction-free life

ilk dakikalardan bayıldım. evde sıkılırken çok lazım olmuştu böyle bir uygulama

Great add-on. Very easy to do initial setup, and it really does make you aware to just how much you're mindlessly clicking on social media, etc. Love that you can set a custom page (which has to be hosted on a web server, can't be a file, just threw IIS on another computer on my network), so you can do custom notes and images. Thanks for making this!

I forgot I installed this and the day after tried to use something that I blocked with it. And it worked! Super simple to set up (looks more complicated than it actually is) and really helpful for maintaining productivity.

Thank you so much!

It's given me back my life.

Before Leechblock I would get up, have coffee, and keep going on Facebook, Reddit, Digg, Quora; arguing politics and talking about whatever. I'd try to work, but I'd keep coming up with excuses to distract myself "for just a minute" with these websites. Then I'd go to bed at three in the morning and wonder why I just couldn't seem to get to work.

I told myself I could quit any time I liked. You know, like any other addict. I told myself that for fifteen years.

Within four weeks using Leechblock to get off the social media dopamine drip, I'm actually working, getting things done, and feeling good for a change. I can focus!

Thank you!

Great addon.

Definitely helps make me more productive. Blocked a bunch of social sites (and Netflix) during work hours. Great extension. Gotta get back to work now!

One of the best addons I have ever used--probably would miss this as much, if not more than an adblocker. It's very effective at blocking distracting sites and the impact on my daily life has been significant.

As far as impact on the browser, LeechBlock itself uses very little RAM and CPU as an addon and it works very quickly (no delay in intercepting) in blocking websites. I also like that it just sits there in its little corner in my browser--no random alerts asking you to download another addon/write a review, ads, etc. like some addons.

The choice of features are excellent--being able to use wildcards to block the distracting pages of a website and allowing the productive parts is genius. The override and delaying feature is pretty smart too. I've used a good mix of all these features in the last few months that I've been using the addon. My favorite one is probably the "immediately block when conditions are met" since it just forces me to get off of social media and other distracting websites unlike other blockers that only block new instances of a website.

Overall, this is a very useful and very interesting productivity tool. It's unreal to see an addon of this quality being produced for free and I'm glad that it has all the features and customization that it has. It's definitely achieved its goal as a productivity tool and has easily cut my time on distracting sites.