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.
561,752 users
LastPass Password Manager
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
558,566 users
545,865 users
Malwarebytes Browser Guard
The fastest and safest web browsing experience. Secure your privacy by blocking trackers, blocking ads, and blocking malicious content.
525,586 users
MetaMask
Ethereum Browser Extension
487,063 users
Browsec VPN - Free VPN for Firefox
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.
481,075 users
479,322 users
Kaspersky Protection 2021
Your protection on the Internet with extension from Kaspersky Lab
469,599 users
SaveFrom.net helper all-in-1 / youtube downloader
SaveFrom.net helper will enable you to download files from YouTube.com, FaceBook.com, Vimeo.com, Daylimotion.com, VK.com, Odnoklassnoki.ru, Soundcloud.com and more than 40 other just in one click.
455,558 users
Language: Español (MX) (Spanish, Mexico)
Firefox Language Pack for Español (MX) (es-MX) – Spanish, Mexico
454,498 users
BetterTTV
Enhances Twitch and YouTube with new features, emotes, and more.
451,428 users
English United States Dictionary
English United States (en-US) Dictionary as shipped with Firefox 115 ESR.
403,517 users
Language: Polski (Polish)
Firefox Language Pack for Polski (pl) – Polish
391,204 users
Language: 简体中文 (Simplified Chinese)
Firefox Language Pack for 简体中文 (zh-CN) – Simplified Chinese
380,564 users
Language: Español (AR) (Spanish, Argentina)
Firefox Language Pack for Español (AR) (es-AR) – Spanish, Argentina
375,278 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.
375,033 users
Language: Italiano (Italian)
Firefox Language Pack for Italiano (it) – Italian
374,468 users
Language: Español (CL) (Spanish, Chile)
Firefox Language Pack for Español (CL) (es-CL) – Spanish, Chile
346,357 users
Web Threat Shield
Keeps you safe when browsing the web by identifying and blocking dangerous websites.
342,026 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!
333,919 users
I don't care about cookies
Get rid of cookie warnings from almost all websites!
330,140 users
Firefox Translations
Translate websites in your browser, privately, without using the cloud. The functionality from this extension is now integrated into Firefox.
329,927 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.
329,014 users
French spelling dictionary
Spelling dictionary for the French language.
309,624 users
Language: Nederlands (Dutch)
Firefox Language Pack for Nederlands (nl) – Dutch
305,216 users