Language: Español (CL) (Spanish, Chile)
Firefox Language Pack for Español (CL) (es-CL) – Spanish, Chile
373,464 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.
370,264 users
Language: Italiano (Italian)
Firefox Language Pack for Italiano (it) – Italian
368,955 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.
345,505 users
Web Threat Shield
Keeps you safe when browsing the web by identifying and blocking dangerous websites.
335,307 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.
327,570 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!
326,680 users
I don't care about cookies
Get rid of cookie warnings from almost all websites!
324,862 users
Firefox Translations
Translate websites in your browser, privately, without using the cloud. The functionality from this extension is now integrated into Firefox.
322,231 users
Search by Image
A powerful reverse image search tool, with support for various search engines, such as Google, Bing, Yandex, Baidu and TinEye.
313,979 users
Simple Translate
Quickly translate selected or typed text on web pages. Supports Google Translate and DeepL API.
312,249 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.
305,131 users
Language: العربية (Arabic)
Firefox Language Pack for العربية (ar) – Arabic
301,996 users
Language: Nederlands (Dutch)
Firefox Language Pack for Nederlands (nl) – Dutch
298,132 users
French spelling dictionary
Spelling dictionary for the French language.
296,885 users
Language: 日本語 (Japanese)
Firefox Language Pack for 日本語 (ja) – Japanese
296,364 users
Language: Português (PT) (Portuguese)
Firefox Language Pack for Português (PT) (pt-PT) – Portuguese
291,726 users
Norton Password Manager
Norton Password Manager. Free password security you can trust.
286,028 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
276,456 users
Language: Українська (Ukrainian)
Firefox Language Pack for Українська (uk) – Ukrainian
275,655 users
274,916 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.
265,075 users
Russian spellchecking dictionary
Russian spellchecking dictionary
263,621 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.
255,944 users
German Dictionary
German Dictionary (new Orthography) for spellchecking in Firefox
251,742 users