Крутая штука без нее даже мобильный from не использую.

Essential.

THE BEST security and privacy tool around.
Thank you Raymond!!!

Dla czego Firefox nie autoryzuje ubloka? bez tego dodatku nie ma sensu przeglądać strony internetowych

Awesome for controlling all aspects of what your browser does. It's also very astute for picking out (and stopping) third party activity.

Crucial addon for gaining control over your browsing security and privacy.
It would be 5 star if it had keyboard shortcuts.

supersizing to see how javascript works , especially if one is trouble shooting connections. Very informative. thanks.

The best addon for Firefox available!
If I were to chose only one addon to use in browser, it would be uMatrix: it almost replaces a lot of other privacy addons by allowing only desired requests (js, image-counters, facebook spyware buttons and etc).
This extension is incredible for advanced users, long live uMatrix!

It's simple to manage, really nice add-on, thanks a lot to Raymond Hill :)

A great addon, but I wish its functionality would be merged with uBlock Origin's functionality, because personally I want to reduce the amount of addons in my browser as much as possible.