40 users
23 users
20 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).
3,690,845 users
Easy Screenshot
Capture a screenshot of the whole webpage, and save in your desktop in default.
2,940,082 users
Language: English (US)
Firefox Language Pack for English (US) (en-US)
2,319,988 users
AdBlocker Ultimate
Completely remove ALL ads. No “acceptable” ads or whitelisted advertisers allowed. This free extensions also helps block trackers and malware.
2,225,064 users
Language: English (GB)
Firefox Language Pack for English (GB) (en-GB)
1,751,827 users
Language: English (CA)
Firefox Language Pack for English (CA) (en-CA)
1,655,316 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.
1,184,844 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.
970,043 users
Cisco Webex Extension
Join Webex meetings using Firefox ™
949,858 users
Language: Deutsch (German)
Firefox Language Pack for Deutsch (de) – German
930,630 users
Language: Français (French)
Firefox Language Pack for Français (fr) – French
890,596 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.
807,621 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.
792,152 users
767,931 users
IDM Integration Module
Download files with Internet Download Manager
699,490 users
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
679,108 users
Language: Español (ES) (Spanish, Spain)
Firefox Language Pack for Español (ES) (es-ES) – Spanish, Spain
660,999 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.
656,525 users
Norton Safe Web
Protects your browser from online threats.
625,797 users
Language: Русский (Russian)
Firefox Language Pack for Русский (ru) – Russian
603,775 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.
565,949 users