Language: Español (CL) (Spanish, Chile)
Firefox Language Pack for Español (CL) (es-CL) – Spanish, Chile
372,021 users
Language: Italiano (Italian)
Firefox Language Pack for Italiano (it) – Italian
369,652 users
Firefox Multi-Account Containers
Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs. Cookies are separated by container, allowing you to use the web with multiple accounts and integrate Mozilla VPN for an extra layer of privacy.
368,870 users
Grammar and Spell Checker - LanguageTool
With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
344,678 users
Web Threat Shield
Keeps you safe when browsing the web by identifying and blocking dangerous websites.
337,521 users
Ecosia — The search engine that plants trees 🌱
This extension adds Ecosia.org as the default search engine to your browser — it’s completely free!
327,035 users
1Password: Password Manager
The best way to experience 1Password in your browser. Easily sign in to sites, generate passwords, and store secure information, including logins, credit cards, notes, and more.
326,259 users
I don't care about cookies
Get rid of cookie warnings from almost all websites!
324,168 users
Firefox Translations
Translate websites in your browser, privately, without using the cloud. The functionality from this extension is now integrated into Firefox.
321,472 users
Search by Image
A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.
313,076 users
Simple Translate
Quickly translate selected or typed text on web pages. Supports Google Translate and DeepL API.
311,029 users
NoScript Security Suite
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.
304,805 users
French spelling dictionary
Spelling dictionary for the French language.
299,380 users
Language: العربية (Arabic)
Firefox Language Pack for العربية (ar) – Arabic
298,591 users
Language: Nederlands (Dutch)
Firefox Language Pack for Nederlands (nl) – Dutch
297,417 users
Language: 日本語 (Japanese)
Firefox Language Pack for 日本語 (ja) – Japanese
296,280 users
Language: Português (PT) (Portuguese)
Firefox Language Pack for Português (PT) (pt-PT) – Portuguese
292,707 users
Norton Password Manager
Norton Password Manager. Free password security you can trust.
286,962 users
275,968 users
Language: Українська (Ukrainian)
Firefox Language Pack for Українська (uk) – Ukrainian
275,925 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
275,510 users
Decentraleyes
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
265,063 users
Russian spellchecking dictionary
Russian spellchecking dictionary
262,766 users
Zoom Extension
Recommended, support FireFox 45+. The Zoom Firefox Extension allows participants to schedule Zoom cloud meetings directly from Google Calendar. you can start an instant meeting or schedule a future meeting via a button.
255,705 users
Language: Čeština (Czech)
Firefox Language Pack for Čeština (cs) – Czech
249,861 users