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

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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.

#1, Facebook Container

Mozilla Firefox

Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.

4.46 (3,952)

990,629

#2, Cisco Webex Extension

Cisco WebEx

Join Webex meetings using Firefox ™

2.88 (313)

984,562

#3, Language: Deutsch (German)

Mozilla Firefox

Firefox Language Pack for Deutsch (de) – German

4.14 (1,110)

971,574

#4, Language: Français (French)

Mozilla Firefox

Firefox Language Pack for Français (fr) – French

4.14 (1,163)

924,093

#5, Language: Français (French)

Mozilla Firefox

Firefox Language Pack for Français (fr) – French

4.14 (1,163)

924,093

#6, 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)

825,275

#7, Activist – Balanced

Mozilla Firefox

You leave the world a better place than you found it and lead others to believe.

4.81 (83)

802,193

#8, 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 (2,975)

789,853

#9, Bitwarden Password Manager

Bitwarden Inc.

At home, at work, or on the go, Bitwarden easily secures all your passwords, passkeys, and sensitive information.

4.76 (7,862)

729,348

#10, Tampermonkey

Jan Biniok

Tampermonkey is the world's most popular userscript manager.

4.70 (4,714)

697,937

#11, Language: Español (ES) (Spanish, Spain)

Mozilla Firefox

Firefox Language Pack for Español (ES) (es-ES) – Spanish, Spain

4.35 (629)

669,753

#12, Language: Español (ES) (Spanish, Spain)

Mozilla Firefox

Firefox Language Pack for Español (ES) (es-ES) – Spanish, Spain

4.35 (629)

669,753

#13, 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 (3,133)

667,435

#14, Norton Safe Web

NortonLifeLock

Protects your browser from online threats.

3.98 (357)

643,284

#15, Return YouTube Dislike

Dmitry Selivanov

Returns ability to see dislike statistics on youtube

4.74 (4,034)

640,242

#16, IDM Integration Module

Internet Download Manager, Tonec Inc.

Download files with Internet Download Manager

4.55 (2,874)

639,713

#17, Language: Русский (Russian)

Mozilla Firefox

Firefox Language Pack for Русский (ru) – Russian

4.41 (287)

620,324

#18, Language: Português (BR)

Mozilla Firefox

Firefox Language Pack for Português (BR) (pt-BR) – Brazilian Portuguese

4.59 (229)

573,008

#19, 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 (14,881)

571,181

#20, Enhancer for YouTube™

Maxime RF

Take control of YouTube and boost your user experience!

4.71 (11,161)

562,701

#21, 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 (631)

561,737