Ublock Origin is an obvious one, but I also can’t stand not having Foxy Gestures anymore. It adds customizable mouse gestures, so you can set it up to have easy swipes to go back a page, reload a page, close a tab, etc, and it feels wonderful and smooth to use compared to just using the traditional buttons to do everything. Honestly it’s kinda wild to me that this isn’t more popular now that people are so used to phone gestures. It’s good for the same reasons!
Decentraleyes serves popular resources locally, reducing reliance on external content delivery networks and enhancing privacy; however, LocalCDN offers a more extensive list of supported libraries, provides additional privacy features, and is actively maintained, making it a better choice.