List of Firefox add-ons with 100K-1M users

Add-ons (also known as extensions) are small programs that run inside web browsers like Mozilla Firefox. They add extra features to the browser without having to download anything new. You can use extensions to make browsing faster, easier, and safer. Some extensions even let you do things like translate text on websites, search the web, and play games.

There are over 28,000 Firefox-addons and 480,000 themes, making it hard to find the best ones. so we have created a way to sort through all of them. Use the dropdown above to set different filters. Add-ons are sorted by number of active users.

To set even more advanced filters, and sort the Firefox add-ons differently, please visit our Advanced search tool. Note that Advanced search tool is only available to premium members.

236 results. Page 1 of 10.
Language: Deutsch (German)
#1, Language: Deutsch (German)
Language: Deutsch (German)
Mozilla Firefox
Firefox Language Pack for Deutsch (de) – German
4.14 (1,106)
983,161
Language: Français (French)
#2, Language: Français (French)
Language: Français (French)
Mozilla Firefox
Firefox Language Pack for Français (fr) – French
4.14 (1,161)
962,240
Language: Français (French)
#3, Language: Français (French)
Language: Français (French)
Mozilla Firefox
Firefox Language Pack for Français (fr) – French
4.14 (1,161)
962,240
Honey
#4, Honey
Honey
Honey
Automatically find and try coupon codes with 1-click. Works at thousands of stores in the US, Canada, Australia, India and the UK.
4.51 (4,314)
837,786
Activist – Balanced
#5, Activist – Balanced
Activist – Balanced
Mozilla Firefox
You leave the world a better place than you found it and lead others to believe.
4.80 (81)
832,334
Grammarly: AI Writing and Grammar Checker App
#6, Grammarly: AI Writing and Grammar Checker App
Grammarly: AI Writing and Grammar Checker App
Grammarly
Improve your writing with Grammarly's assistance. Get spell check, grammar check, and punctuation check in one tool. Real-time suggestions for improving tone and clarity help ensure your writing makes the impression you want.
4.11 (2,972)
808,950
Bitwarden Password Manager
#7, Bitwarden Password Manager
Bitwarden Password Manager
Bitwarden Inc.
At home, at work, or on the go, Bitwarden easily secures all your passwords, passkeys, and sensitive information.
4.77 (7,850)
741,518
Tampermonkey
#8, Tampermonkey
Tampermonkey
Jan Biniok
Tampermonkey is the world's most popular userscript manager.
4.70 (4,714)
694,443
Language: Español (ES) (Spanish, Spain)
#9, Language: Español (ES) (Spanish, Spain)
Language: Español (ES) (Spanish, Spain)
Mozilla Firefox
Firefox Language Pack for Español (ES) (es-ES) – Spanish, Spain
4.35 (628)
687,773
Language: Español (ES) (Spanish, Spain)
#10, Language: Español (ES) (Spanish, Spain)
Language: Español (ES) (Spanish, Spain)
Mozilla Firefox
Firefox Language Pack for Español (ES) (es-ES) – Spanish, Spain
4.35 (628)
687,773
TWP - Translate Web Pages
#11, TWP - Translate Web Pages
TWP - Translate Web Pages
Filipe Dev
Translate your page in real time using Google or Yandex. It is not necessary to open new tabs. Now works with the NoScript Extension.
4.80 (3,130)
675,376
Norton Safe Web
#12, Norton Safe Web
Norton Safe Web
NortonLifeLock
Protects your browser from online threats.
3.98 (357)
657,142
IDM Integration Module
#13, IDM Integration Module
IDM Integration Module
Internet Download Manager, Tonec Inc.
Download files with Internet Download Manager
4.55 (2,870)
656,716
Language: Русский (Russian)
#14, Language: Русский (Russian)
Language: Русский (Russian)
Mozilla Firefox
Firefox Language Pack for Русский (ru) – Russian
4.41 (287)
641,069
Return YouTube Dislike
#15, Return YouTube Dislike
Return YouTube Dislike
Dmitry Selivanov
Returns ability to see dislike statistics on youtube
4.74 (4,025)
638,822
Language: Português (BR)
#16, Language: Português (BR)
Language: Português (BR)
Mozilla Firefox
Firefox Language Pack for Português (BR) (pt-BR) – Brazilian Portuguese
4.59 (229)
609,955
Easy Youtube Video Downloader Express
#17, Easy Youtube Video Downloader Express
Easy Youtube Video Downloader Express
Dishita
A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p formats.
4.23 (14,858)
585,465
Capital One Shopping: Save Now
#18, Capital One Shopping: Save Now
Capital One Shopping: Save Now
Capital One Shopping
Capital One Shopping instantly applies coupon codes to your shopping cart, helps you snag exclusive rewards when you shop at stores you love and compares prices on Amazon to other popular retailers. It's kinda genius.
4.46 (629)
573,767
Enhancer for YouTube™
#19, Enhancer for YouTube™
Enhancer for YouTube™
Maxime RF
Take control of YouTube and boost your user experience!
4.72 (11,141)
567,406
LastPass Password Manager
#20, LastPass Password Manager
LastPass Password Manager
LastPass
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
3.68 (8,447)
564,913
Visionary – Balanced
#21, Visionary – Balanced
Visionary – Balanced
Mozilla Firefox
You question the status quo and move others to imagine a better future.
4.59 (41)
545,012
Malwarebytes Browser Guard
#22, Malwarebytes Browser Guard
Malwarebytes Browser Guard
Malwarebytes
The fastest and safest web browsing experience. Secure your privacy by blocking trackers, blocking ads, and blocking malicious content.
4.29 (698)
530,882
Language: Español (MX) (Spanish, Mexico)
#23, Language: Español (MX) (Spanish, Mexico)
Language: Español (MX) (Spanish, Mexico)
Mozilla Firefox
Firefox Language Pack for Español (MX) (es-MX) – Spanish, Mexico
4.44 (324)
503,789
MetaMask
#24, MetaMask
MetaMask
danfinlay
Ethereum Browser Extension
4.27 (3,911)
488,913
Dreamer – Balanced
#25, Dreamer – Balanced
Dreamer – Balanced
Mozilla Firefox
You believe that fortune favors the bold and inspire others to be brave.
4.82 (38)
479,660
236 results. Page 1 of 10.