List of Firefox add-ons with 100-999 ratings

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100-999 ratings

0 stars
1-1.99 stars
2-2.99 stars
3-3.99 stars
4-4.99 stars
5 stars
0 ratings
1 rating
2-9 ratings
10-99 ratings
100-999 ratings
1000-9999 ratings
10K+ ratings

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.

#1, Easy Screenshot

Mozilla Online

Capture a screenshot of the whole webpage, and save in your desktop in default.

3.87 (723)

2,846,924

#2, Language: English (US)

Mozilla Firefox

Firefox Language Pack for English (US) (en-US)

4.13 (781)

2,242,874

#3, Language: English (GB)

Mozilla Firefox

Firefox Language Pack for English (GB) (en-GB)

3.72 (934)

1,594,081

#4, Cisco Webex Extension

Cisco WebEx

Join Webex meetings using Firefox ™

2.90 (315)

854,176

#5, Activist – Balanced

Mozilla Firefox

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

4.73 (116)

674,839

#6, Norton Safe Web

NortonLifeLock

Protects your browser from online threats.

3.98 (362)

574,840

#7, Language: Русский (Russian)

Mozilla Firefox

Firefox Language Pack for Русский (ru) – Russian

4.42 (291)

559,006

#8, 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.

4.44 (672)

543,177

#9, Language: Português (BR)

Mozilla Firefox

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

4.62 (242)

515,110

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

Mozilla Firefox

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

4.35 (660)

514,606

#11, Malwarebytes Browser Guard

Malwarebytes

The fastest and safest web browsing experience. Secure your privacy by blocking trackers, blocking ads, and blocking malicious content.

4.28 (738)

480,962

#12, BetterTTV

NightDev

Enhances Twitch and YouTube with new features, emotes, and more.

4.63 (868)

426,501

#13, Language: Español (MX) (Spanish, Mexico)

Mozilla Firefox

Firefox Language Pack for Español (MX) (es-MX) – Spanish, Mexico

4.45 (345)

369,136

#14, English United States Dictionary

Jorg K

English United States (en-US) Dictionary as shipped with Firefox 115 ESR.

4.39 (225)

352,443

#15, Language: Polski (Polish)

Mozilla Firefox

Firefox Language Pack for Polski (pl) – Polish

4.60 (163)

349,860

#16, Language: 简体中文 (Simplified Chinese)

Mozilla Firefox

Firefox Language Pack for 简体中文 (zh-CN) – Simplified Chinese

4.55 (289)

346,486

#17, Language: Italiano (Italian)

Mozilla Firefox

Firefox Language Pack for Italiano (it) – Italian

4.37 (283)

327,603

#18, Language: Español (AR) (Spanish, Argentina)

Mozilla Firefox

Firefox Language Pack for Español (AR) (es-AR) – Spanish, Argentina

4.27 (205)

275,231

#19, Language: 日本語 (Japanese)

Mozilla Firefox

Firefox Language Pack for 日本語 (ja) – Japanese

4.18 (113)

274,331

#20, Ecosia — The search engine that plants trees 🌱

Ecosia Dev Team

This extension adds Ecosia.org as the default search engine to your browser — it’s completely free!

4.80 (731)

273,417

#21, Reddit Enhancement Suite

honestbleeps

Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.

4.79 (561)

265,733

#22, French spelling dictionary

Olivier R.

Spelling dictionary for the French language.

4.38 (213)

265,167

#23, Language: Nederlands (Dutch)

Mozilla Firefox

Firefox Language Pack for Nederlands (nl) – Dutch

3.91 (225)

263,113

#24, Language: Português (PT) (Portuguese)

Mozilla Firefox

Firefox Language Pack for Português (PT) (pt-PT) – Portuguese

4.27 (241)

253,759

#25, Norton Password Manager

NortonLifeLock

Norton Password Manager. Free password security you can trust.

3.55 (682)

249,391