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!

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.

5 stars if it wasn't blocking bestgore without a reason

That is the best script blocker I ever used...

The only issue is that it is continuously deleting cookies from sites that are NOT blackslisted (despite having that option not checked). Even whitelisting a site explicitly for cookies doens't always help.

Also, the description of the extensions is referring to github for reporting bugs and issues, however the repository is configured to NOT allow new github users to create issues.

better author, more control