List of Firefox add-ons with Updated yesterday

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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.

266 results. Page 1 of 11.

#1, Language: English (US)

Mozilla Firefox

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

4.13 (781)

2,242,874

#2, Language: English (GB)

Mozilla Firefox

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

3.72 (934)

1,594,081

#3, Language: English (CA)

Mozilla Firefox

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

4.25 (67)

1,539,126

#4, AdBlock for Firefox

AdBlock

The most popular ad blocker for Chrome and Safari, now available for Firefox! Block all advertisements on all web pages, even Facebook, Youtube, and Hulu. Browse faster, too! Most ads aren't even downloaded at all, saving you time and bandwidth.

4.28 (3,288)

1,139,452

#5, Language: Deutsch (German)

Mozilla Firefox

Firefox Language Pack for Deutsch (de) – German

4.15 (1,153)

889,826

#6, Language: Français (French)

Mozilla Firefox

Firefox Language Pack for Français (fr) – French

4.15 (1,209)

785,733

#7, Language: Русский (Russian)

Mozilla Firefox

Firefox Language Pack for Русский (ru) – Russian

4.42 (291)

559,006

#8, Language: Português (BR)

Mozilla Firefox

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

4.62 (242)

515,110

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

Mozilla Firefox

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

4.35 (660)

514,606

#10, Browsec VPN - Free VPN for Firefox

Browsec Inc

Unblock geographically restricted content and protect your IP with Browsec’s add-on. With this Firefox VPN, you can stay anonymous for an unlimited time! Use free remote servers to hide your location and access any content you want.

4.01 (2,920)

465,600

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

Mozilla Firefox

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

4.45 (345)

369,136

#12, Language: Polski (Polish)

Mozilla Firefox

Firefox Language Pack for Polski (pl) – Polish

4.60 (163)

349,860

#13, 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

#14, Language: Italiano (Italian)

Mozilla Firefox

Firefox Language Pack for Italiano (it) – Italian

4.37 (283)

327,603

#15, Web Threat Shield

Webroot.com

Keeps you safe when browsing the web by identifying and blocking dangerous websites.

4.27 (45)

306,737

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

Mozilla Firefox

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

4.27 (205)

275,231

#17, Language: 日本語 (Japanese)

Mozilla Firefox

Firefox Language Pack for 日本語 (ja) – Japanese

4.18 (113)

274,331

#18, 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

#19, NoScript Security Suite

Giorgio Maone

The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.

4.40 (2,246)

269,011