NoScript has always been working very good. You can set it up to run on your frequently website once. After that it will remember your settings so NoScript dont just "break" things. Put all the ad company and google spy service to Untrusted. Put the "good" ones to temp trusted so you can see that it works. For example YouTube you would like to be trusted so it works. Google.com you would want to add to Untrusted. Play around with the settings then you have a great protection.

Perfect for blocking unwanted/unneeded javascript!

Sadly it stopped to work for YouTube for me. YouTube do not load at all with multliple errors in browser's console "Uncaught ReferenceError: ytcfg is not defined", even when I have YT's javascrips as allowed. Only thing which helps is to turn off NoScript extension. I believe this is only temporary situation...

EDIT: latest version 11.0.36 fixes the problem, so once again perfect! :)

It's a nice addon, but the latest release broke some websites, e.g. https://space.bilibili.com/161775300

NoScript works perfect also on firefox 79.0
If it doesn't remember settings the reason could be CCleaner > Custom Clean > Applications > Firefox > “Internet Cache” option deletes all *.sqlite-shm, *.sqlite-wal,
see
https://blog.mozilla.org/addons/2020/07/09/changes-to-storage-sync-in-firefox-79/#comment-226931
That’s a bug in CCleaner, not in NoScript and not in Firefox.

(Still) works great.

my favorite extension