Add-ons for Firefox (en-CA)

RECOMMENDED

Simple Tab Groups

Create and customize tab groups.

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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

Web Archives
View archived and cached versions of web pages on various search engines, such as the Wayback Machine and Archive․is.
Rated 4.7 out of 5
Armin Sebastian
67,256 users
Ghostery – Privacy Ad Blocker
The best privacy tool and ad blocker extension for Firefox. Stop trackers, speed up websites and block ads everywhere including YouTube and Facebook.
Rated 4.3 out of 5
Ghostery
1,061,185 users
Don't track me Google
Removes the annoying link-conversion at Google Search / maps / ...
Rated 4.6 out of 5
Rob W
73,877 users
AdBlocker for YouTube™
Remove all annoying ads from YouTube.
Rated 3.9 out of 5
AdblockLite
581,286 users

Top rated themes

Kirby9
Rated 5 out of 5
＼(^o^)／
9,201 users
Praise the sun (animated)
Rated 4.9 out of 5
anon
15,877 users
Spirited Away (Animated)
Rated 4.9 out of 5
Max
22,131 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
20,281 users
Tree Style Tab
Show tabs like a tree.
Rated 4.5 out of 5
Piro (piro_or)
219,678 users
Simple Tab Groups
Create, modify, and quickly change tab groups
Rated 4 out of 5
Drive4ik
102,087 users
OneTab
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
Rated 4.2 out of 5
OneTab Team
171,369 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
9,585,724 users
Video DownloadHelper
Download videos from the web. Easy, smart, no tracking.
Rated 4.3 out of 5
mig
1,924,496 users
Privacy Badger
Automatically learns to block invisible trackers.
Rated 4.8 out of 5
EFF Technologists
1,874,932 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
1,399,464 users

Recommended themes

Snowflake Theme
Rated 4.7 out of 5
Moondust13
1,290 users
C.E.Coral Reef 3
Rated 4.8 out of 5
Creative_Expressions (Gale)
1,142 users
Animated│Geometric Hexagon
Rated 5 out of 5
Pavol Polák
3,551 users

Twitch extensions

BetterTTV
Enhances Twitch and YouTube with new features, emotes, and more.
Rated 4.6 out of 5
NightDev
487,993 users
Alternate Player for Twitch.tv
Alternate player of live broadcasts for Twitch.tv website.
Rated 4.3 out of 5
Alexander Choporov (CoolCmd)
35,816 users
Twitch Chat pronouns
Add Pronouns to Twitch Chat
Rated 3.4 out of 5
Alejo Pereyra
16,013 users
Unwanted Twitch
Hide unwanted streams, games, categories, channels and tags on: twitch.tv
Rated 4.2 out of 5
kwaschny.net
5,810 users

“content blocker” tagged extensions

uBlock Origin
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
Rated 4.8 out of 5
Raymond Hill
9,585,724 users
Privacy Badger
Automatically learns to block invisible trackers.
Rated 4.8 out of 5
EFF Technologists
1,874,932 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
1,399,464 users
DuckDuckGo Privacy Essentials
Simple and seamless privacy protection for your browser: tracker blocking, cookie protection, DuckDuckGo private search, email protection, HTTPS upgrading, and much more.
Rated 4.3 out of 5
DuckDuckGo
1,379,273 users