Add-ons for Firefox (en-US)

RECOMMENDED

LeechBlock NG

Block time-wasting websites. Block them completely or just during time frames of your choosing.

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Extensions are like apps for Firefox.

They add features to Firefox to make browsing faster, safer, or just plain fun.

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Productivity tools

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YouTube customization

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Privacy & Security extensions

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Recommended extensions

Copy PlainText
Copy Plain Text without any formatting
Rated 4.6 out of 5
erosman
29,862 users
Tabliss - New Tab
A beautiful New Tab page with many customisable backgrounds and widgets that does not require any permissions.
Rated 4.6 out of 5
tabliss.io
80,636 users
Foxy Gestures
Mouse gestures for Firefox. A web extension alternative to FireGestures created by a long time FireGestures user.
Rated 4.2 out of 5
liebs
21,059 users
Enhancer for YouTube™
Take control of YouTube and boost your user experience!
Rated 4.7 out of 5
Maxime RF
675,824 users

Top rated themes

Kirby9
Rated 5 out of 5
＼(^o^)／
9,438 users
Praise the sun (animated)
Rated 4.9 out of 5
anon
16,186 users
Spirited Away (Animated)
Rated 4.9 out of 5
Max
22,665 users

Tab managers

Tabby - Window & Tab Manager
Tabby helps you manage a lot of windows and tabs easily; it can help you open, close, move, pin, and do many other things on tabs and windows quickly. With Tabby, you can even save all you windows and tabs for later with just one click!
Rated 4.3 out of 5
BillK
21,574 users
Tree Style Tab
Show tabs like a tree.
Rated 4.5 out of 5
Piro (piro_or)
222,223 users
Simple Tab Groups
Create, modify, and quickly change tab groups
Rated 4 out of 5
Drive4ik
103,542 users
OneTab
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
Rated 4.2 out of 5
OneTab Team
173,134 users

Popular extensions

uBlock Origin
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
Rated 4.8 out of 5
Raymond Hill
9,678,822 users
Video DownloadHelper
Download videos from the web. Easy, smart, no tracking.
Rated 4.3 out of 5
mig
1,936,904 users
Privacy Badger
Automatically learns to block invisible trackers.
Rated 4.8 out of 5
EFF Technologists
1,891,393 users
AdGuard AdBlocker
Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.
Rated 4.7 out of 5
Adguard Software Ltd
1,408,568 users

Recommended themes

Black-minimal-Blue Theme
Rated 3.6 out of 5
Newheron
571 users
Grenen 2 Seas Dark Mod
Rated 4.8 out of 5
Jutte Angarde
36,257 users
C.E.Coral Reef 3
Rated 4.8 out of 5
Creative_Expressions (Gale)
1,189 users

Twitch extensions

BetterTTV
Enhances Twitch and YouTube with new features, emotes, and more.
Rated 4.6 out of 5
NightDev
490,689 users
Alternate Player for Twitch.tv
Alternate player of live broadcasts for Twitch.tv website.
Rated 4.3 out of 5
Alexander Choporov (CoolCmd)
36,086 users
Twitch Chat pronouns
Add Pronouns to Twitch Chat
Rated 3.4 out of 5
Alejo Pereyra
16,084 users
Unwanted Twitch
Hide unwanted streams, games, categories, channels and tags on: twitch.tv
Rated 4.2 out of 5
kwaschny.net
5,834 users

“password manager” tagged extensions

Bitwarden Password Manager
At home, at work, or on the go, Bitwarden easily secures all your passwords, passkeys, and sensitive information.
Rated 4.6 out of 5
Bitwarden Inc.
880,126 users
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
Rated 4.3 out of 5
Siber Systems
61,963 users
LastPass Password Manager
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
Rated 3.7 out of 5
LastPass
517,444 users
1Password: Password Manager
The best way to experience 1Password in your browser. Easily sign in to sites, generate passwords, and store secure information, including logins, credit cards, notes, and more.
Rated 3.9 out of 5
1Password
381,613 users