It's support was ended 2 years ago but it still works perfectly and feels complete enough that I don't feel like it necessary to move on to something else. I have yet to find a plugin with an interface as good as uMatrix has.

Nutze es seit über einem Jahr, ist super nützlich und nach einer Eingewöhnungsphase auch nutzerfreundlich zu bedienen.

The best Add-on! ᚢ ᚢ ᚢ

Sadly not actively developed, but still works amazing, I find it better than any other privacy plugin, or even than combination of them. Due to how easy it is to customize/adjust on per page basis, no deep menus or anything, click, whitelist some domains, done.

nice script and content blocker.
easy to adjust and unblock if needed. great work. Thanks