@xianc78 I know about Pale Moon and even actively used it some time ago, but over time, it just became unfeasible.
The developer is very eccentric and it's sometimes hard to understand his decisions. For example, there's no multi-core support, despite some people offering their help in the past to get that, and it runs everything in one process. As a result, it doesn't perform well after some time and becomes unstable during long sessions with many tabs open.
Then there's the fact that I feel it's outdated in regards to privacy.
And lastly, existing add-ons are deprecating and/or new ones not coming out for it. Last month, when I happened to update Pale Moon and look at it again, there was even some bizarre drama. A user who maintains forks for, I believe, uBlock Origin and uMatrix, did something that made the developer of Pale Moon disable them completely. If you're curious, here's the thread:
https://forum.palemoon.org/viewtopic.php?f=46&t=26204#PaleMoon #Browsers