There's an alternative for Pale Moon...

https://addons.palemoon.org/addon/ematrix/

Interesting, thanks.

It is not currently maintained, but it is not dead yet.

I was just warning people. Depending on something like umatrix that also uses "lists" that aren't being updated should at least be known about. I wouldn't recommend using it without combining it with something like noscript or ublock (depending on how aggressive you are).