LastPass Password Manager
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
514,268 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.
510,916 users
Malwarebytes Browser Guard
The fastest and safest web browsing experience. Secure your privacy by blocking trackers, blocking ads, and blocking malicious content.
485,856 users
Language: Español (MX) (Spanish, Mexico)
Firefox Language Pack for Español (MX) (es-MX) – Spanish, Mexico
450,508 users
BetterTTV
Enhances Twitch and YouTube with new features, emotes, and more.
445,058 users
MetaMask
Ethereum Browser Extension
438,009 users
429,968 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.
426,990 users
Kaspersky Protection 2021
Your protection on the Internet with extension from Kaspersky Lab
416,509 users
Language: Polski (Polish)
Firefox Language Pack for Polski (pl) – Polish
383,515 users
377,356 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.
375,602 users
English United States Dictionary
English United States (en-US) Dictionary as shipped with Firefox 115 ESR.
357,623 users
Language: Italiano (Italian)
Firefox Language Pack for Italiano (it) – Italian
352,361 users
Language: 简体中文 (Simplified Chinese)
Firefox Language Pack for 简体中文 (zh-CN) – Simplified Chinese
349,777 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.
337,414 users
Language: Español (AR) (Spanish, Argentina)
Firefox Language Pack for Español (AR) (es-AR) – Spanish, Argentina
333,624 users
Web Threat Shield
Keeps you safe when browsing the web by identifying and blocking dangerous websites.
304,081 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!
300,784 users
I don't care about cookies
Get rid of cookie warnings from almost all websites!
299,385 users
Language: Español (CL) (Spanish, Chile)
Firefox Language Pack for Español (CL) (es-CL) – Spanish, Chile
296,182 users
French spelling dictionary
Spelling dictionary for the French language.
294,822 users
Language: Nederlands (Dutch)
Firefox Language Pack for Nederlands (nl) – Dutch
281,825 users
Reddit Enhancement Suite
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
278,574 users
Language: 日本語 (Japanese)
Firefox Language Pack for 日本語 (ja) – Japanese
275,366 users