116 users
109 users
106 users
99 users
Adblock Plus
One of the most popular free ad blockers for Firefox. Block annoying ads on sites like Facebook, YouTube and all other websites. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
3,780,018 users
Easy Screenshot
Capture a screenshot of the whole webpage, and save in your desktop in default.
3,270,997 users
Language: English (US)
Firefox Language Pack for English (US) (en-US)
2,409,491 users
AdBlocker Ultimate
Completely remove ALL ads. No “acceptable” ads or whitelisted advertisers allowed. This free extensions also helps block trackers and malware.
2,179,704 users
Language: English (GB)
Firefox Language Pack for English (GB) (en-GB)
1,800,771 users
Language: English (CA)
Firefox Language Pack for English (CA) (en-CA)
1,706,853 users
AdBlock for Firefox
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.
1,205,624 users
Cisco Webex Extension
Join Webex meetings using Firefox ™
971,986 users
Language: Deutsch (German)
Firefox Language Pack for Deutsch (de) – German
967,109 users
Facebook Container
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.
967,102 users
Language: Français (French)
Firefox Language Pack for Français (fr) – French
962,738 users
Honey
Automatically find and try coupon codes with 1-click. Works at thousands of stores in the US, Canada, Australia, India and the UK.
786,353 users
Grammarly: AI Writing and Grammar Checker App
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.
782,601 users
770,180 users
IDM Integration Module
Download files with Internet Download Manager
709,769 users
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
699,535 users
Language: Español (ES) (Spanish, Spain)
Firefox Language Pack for Español (ES) (es-ES) – Spanish, Spain
687,960 users
TWP - Translate Web Pages
Translate your page in real time using Google or Yandex. It is not necessary to open new tabs. Now works with the NoScript Extension.
676,743 users
Norton Safe Web
Protects your browser from online threats.
625,238 users
Language: Русский (Russian)
Firefox Language Pack for Русский (ru) – Russian
614,104 users
Capital One Shopping: Save Now
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.
558,360 users