Bitwarden.

I think all of these also have Chrome versions, but still better on FF due to being able to install (or side-load if not listed or not whitelisted for mobile) onto the mobile version. The day I learned how to get non-whitelisted ones to install and install from xpi was game over for bothering with other mobile browsers.

• FastStream for downloading videos from YT and a lot of other sites (I daily use it for grabbing stuff on Twitter)
• Bypass Paywalls Clean for the obvious (this one is to the dev’s not github but same kind of site site as it has to be installed via xpi)
• Watch on Odysee for seeing if a YT channel also uploads to Odysee to go watch there if possible and at least give my view there
• SponsorBlock for being able to skip hard-coded ads from the uploads and other sections of YT videos
• DeArrow for being able to view titles for YT videos that are more reflective of content
• Wayback Machine for saving pages to Archive.org along with saving them to my account on there.
• Privacy Possum for more aggressive blocking of tracking (though it does require remembering it is on if a site breaks as it will block things that uBO isn’t the cause of the issue)

Multi-account containers. Let’s you have 2 different Gmail accounts open at once. Also I try to silo different parts of my life to prevent tracking.

Noscript and tampermonkey too.

Adnauseam Silently click-spams ads to drain their bandwidth, with the purpose of making the horrible advertising business unprofitable.

Tree style tabs

Makes it simultaneously easier to open a billion pages but also manages them nicely

Tab Snooze - allows you to close a tab and have it reappear at a chosen time later

Domain Volume Control / Better Volume Booster - allow you to set default volume per-domain (note that unfortunately, in the 1st one the set volume gets changed when you change the volume through a site’s player, and the 2nd one currently causes an issue on Nightly with unpaused videos)

Playback speed - allows you to change the speed of videos/audio on any site, even only by x0.01 at a time (you can also change the buttons that appear when you click on the addon in the toolbar/addons menu to have specific speeds readily available) (note that it doesn’t change the pitch of the audio)

• Specifically for YouTube you can also use an addon like Improve YouTube. To configure the feature click on the addon in the toolbar/addons menu > Shortcuts > Playback speed. To change the shortcut so that you hold Ctrl and use the mousewheel (while hovering over the video) click Ctrl and release it before using the mousewheel up or down accordingly (otherwise it acts as a zoom to the settings window)

Media URL Timestamper - automatically inserts the current timestamp of the YouTube/Twitch video you’re watching and updates it in the history in case you accidentally close/navigate away from the page or go to a different time in the video

Feedbro - an RSS reader with filtering capabilities

Sponsor Block–Skips some YouTube ads.

Language Tool–keeps me from making stupid grammar errors.

Cookie Quick Manager–you can lock cookies and other stuff.

I like to use mouse gestures since the time Opera had its own engine. So basically the Gesturefy add-on for Firefox is a must for me.

I’ll throw out a few.

• LibRedirect

• Chameleon

• NoScript

Tridactyl is a must for me. It’s as close to the Qutebrowser experience as I can find (especially with ‘:guiset none’) but I get to keep my ublock/sponsorblocks.

Tridactyl

Markdown here

JShelter?

SteamDB makes Steam actually usable

Is there any add-on for me to get YouTube on Firefox to behave more like the YouTube kids app? I’ve been trying to find a way to set up YouTube with an allowlist on my kids’ computer but for now I just have the entire site blocked. They don’t need YouTube but they watch educational videos on it at school and they want to watch them at home, too. Blocking individual channels is like playing whack-a-mole.