Easy to use JavaScript blocker.

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

A fairly useful addon that can prevent sketchy sites from doing sketchy things. Now, most websites won't show images unless you enable JS for a few things, and some won't even allow you to use it unless Java Script is enabled, but for the most part, as long as you use it right, it would greatly help prevent sketchy scripts

This addon is the most important. I would like to have the ability to add manual url like: *cdn.com or new?site.com

Definitely an essential tool that should come by default.

It's fantastic! If you understand the need for it, you'll love it. It just works! I've been using it for years, and have also donated to the cause!