LastPass Password Manager
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
528,666 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.
517,836 users
Malwarebytes Browser Guard
The fastest and safest web browsing experience. Secure your privacy by blocking trackers, blocking ads, and blocking malicious content.
494,875 users
Language: Español (MX) (Spanish, Mexico)
Firefox Language Pack for Español (MX) (es-MX) – Spanish, Mexico
457,479 users
BetterTTV
Enhances Twitch and YouTube with new features, emotes, and more.
448,043 users
448,006 users
MetaMask
Ethereum Browser Extension
446,375 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.
436,786 users
Kaspersky Protection 2021
Your protection on the Internet with extension from Kaspersky Lab
428,660 users
Language: Polski (Polish)
Firefox Language Pack for Polski (pl) – Polish
395,021 users
392,578 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.
384,299 users
English United States Dictionary
English United States (en-US) Dictionary as shipped with Firefox 115 ESR.
369,580 users
Language: Italiano (Italian)
Firefox Language Pack for Italiano (it) – Italian
361,581 users
Language: 简体中文 (Simplified Chinese)
Firefox Language Pack for 简体中文 (zh-CN) – Simplified Chinese
357,738 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.
347,299 users
Language: Español (AR) (Spanish, Argentina)
Firefox Language Pack for Español (AR) (es-AR) – Spanish, Argentina
337,282 users
Web Threat Shield
Keeps you safe when browsing the web by identifying and blocking dangerous websites.
317,941 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!
311,129 users
I don't care about cookies
Get rid of cookie warnings from almost all websites!
306,159 users
French spelling dictionary
Spelling dictionary for the French language.
306,104 users
Language: Español (CL) (Spanish, Chile)
Firefox Language Pack for Español (CL) (es-CL) – Spanish, Chile
299,581 users
Language: Nederlands (Dutch)
Firefox Language Pack for Nederlands (nl) – Dutch
289,274 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
281,188 users
Language: 日本語 (Japanese)
Firefox Language Pack for 日本語 (ja) – Japanese
281,183 users