Firefox

Dark Reader is sort of annoying to set up, but I like it. It would be better if you could choose to share your location with it rather than inputting your lat/long manually. (It's possible that's a limitation of extensions though.)

I use the DDG extension too but it's caused problems by blocking a webpage on localhost for some reason. Not sure what it does that uBO and Privacy Badger cannot.

I haven't used https://adnauseam.io/ but I like the idea of it. I stick with uBO and use AdGuard's public DNS in my router (too lazy to set up pihole).

• Augmented Steam - sales on other platforms and whatnot
• BetterTV - emojis and whatnot on Twitch and YouTube
• Bitwarden
• Easy Container Shortcuts - makes container tabs nice to work with
• Multi-Account containers
• Steam Economy Enhancer - installed w/ Violentmonkey script manager; bulk sell Steam trading cards

And of course uBlock Origin. :)

Sieberry, it's what Mozilla is unable to do, nice looking and working vertical tabs.

Simple Translate is nice too just mark a text and instant translation.

I still don't care about cookies, yeah just leave me alone.

Scroll everywhere, right Click to scroll any page. Should be vanilla feature.

Keepa, for amazon price history of any product.

• Ublock Origin: No brainer. You can block just about every intrusive component of the modern internet with just this.

• Stylus: Write CSS themes for websites

• User-Agent Manager: For compatibility purposes, switch your user-agent to chromium on some websites

• Libredirect

• ClearURLs: Copy links without tracking or affiliation

• Dark Reader: Dark mode everywhere

• Temporary Containers: Provides some nifty shortcuts and features for creating temporary containers

Some of my picks to add to all other comments

• Gesturefy: Mouse gesture addon. It can also run custom javascript. For example I have a script that makes copying text, links, buttons easier.
• Imagus mod: Hover zoom addon with up-to-date sieves that actually work. The sieve team is quite good.
• BetterViewer: Image viewer although some buttons don't work on firefox.
• Fastforward: circumvents annoying link shorteners
• Distill: Monitor webpage or feed for changes

I also have many ***monkey and stylus scripts.

My favourites are:

• ProtonPass
• DarkReader
• uBlock Origin
• Privacy Badger
• Multi-account containers
• Joplin (to save pages to my local Joplin notes)

Since it's not mentioned before, check out DeArrow. It makes YouTube bearable.

ClearURLs

It makes, say, Amazon links not a three-page bookwork

Indie wiki buddy. Fandom often times comes on top for most searches, but many games actually have their official wikis elsewhere. This extension hides fandom links for unofficial fandom wikis.

Cloud to butt

I've been using it for such a long time. It's only on my PC. I don't use my PC for much anymore, so when I see the word "butt" when it should say "cloud," I get a little chuckle.

• LocalCDN
• HTTP Version Indicator

enhanced-h264ify prevents my PC from cooking itself when playing YT.

• Vimium

• Redirector

(And OFC all the other great ones, Dark Reader, Chameleon, NoScript, AdBlocker Ultimate.)

Not trying to hijack this post but does anyone know of an add-on that syncs your bookmarks toolbar? Its the only thing holding me back from being fully on librewolf.

I may be biased, but I like Lemmy Infinite Scroller. It started out as a 20 minute project just as a proof of concept and then evolved into me trying to make an infinite scroller that works really well. It works well, I can't recall if I made it open-source but I didn't obfuscate the code or anything like that so it's practically open-source anyway even if I didn't make a repo for it. I just published the manifest v3 update of it last week so it's pretty futureproof too.

Other obvious extensions are uBlock Origin, uMatrix, and surprisingly one called Dark Background and Light Text (though Dark Reader is also cool too).

Aside from the standard one's I see:
Streaming enhanced: Netflix Disney+ Prime Video

Automatically skip Ads, Intros, Credits and add Speed Control, etc. on Netflix, Prime video, Disney+, Crunchyroll and HBO max.

Making a note to myself about Sponsorblock and chameleon

I thought you could only select from a pre-defined list of addons in Firefox mobile?

• Sponsorblock
• uBlock Origin
• I still don't care about cookies
• Augmented Steam
• BetterTTV
• YouTube Shorts Redirect
• Gumbo
• Bitwarden

These are all the extension I have installed and they are all my favourite tbh. I also have Firefox set to use strongest protection.