Firefox

Behind the Overlay.

I still don't care about cookies

I don't want to say its name, cause I worry (maybe unnecessarily) about making it a target, but there's a downloader for YouTube that's the only extension I've ever paid for.

I have compiled the best recommendations in a list: https://lemmy.world/post/14173277

https://addons.mozilla.org/en-US/firefox/addon/swift-selection-search/

"Swiftly access your search engines in a popup panel when you select text in a webpage."

uBlacklist is great for hiding horrid search results.

Tab Center Reborn (and some css to hide the top tab bar) for sidebar tabs.