Language: Español (ES) (Spanish, Spain)
Firefox Language Pack for Español (ES) (es-ES) – Spanish, Spain
668,534 users
IDM Integration Module
Download files with Internet Download Manager
665,265 users
Return YouTube Dislike
Returns ability to see dislike statistics on youtube
648,734 users
Norton Safe Web
Protects your browser from online threats.
642,608 users
Language: Русский (Russian)
Firefox Language Pack for Русский (ru) – Russian
625,727 users
Easy Youtube Video Downloader Express
A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p formats.
577,583 users
Enhancer for YouTube™
Take control of YouTube and boost your user experience!
568,602 users
Language: Português (BR)
Firefox Language Pack for Português (BR) (pt-BR) – Brazilian Portuguese
568,282 users
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.
560,829 users
LastPass Password Manager
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
548,212 users
523,551 users
Malwarebytes Browser Guard
The fastest and safest web browsing experience. Secure your privacy by blocking trackers, blocking ads, and blocking malicious content.
517,869 users
Language: Español (MX) (Spanish, Mexico)
Firefox Language Pack for Español (MX) (es-MX) – Spanish, Mexico
491,699 users
MetaMask
Ethereum Browser Extension
480,142 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.
471,873 users
AdBlocker for YouTube™
Remove all annoying ads from YouTube.
462,870 users
Kaspersky Protection 2021
Your protection on the Internet with extension from Kaspersky Lab
460,466 users
460,153 users
BetterTTV
Enhances Twitch and YouTube with new features, emotes, and more.
451,624 users
SponsorBlock - Skip Sponsorships on YouTube
Easily skip YouTube video sponsors. When you visit a YouTube video, the extension will check the database for reported sponsors and automatically skip known sponsors. You can also report sponsors in videos. Other browsers: https://sponsor.ajay.app
437,395 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.
433,504 users
Language: Español (AR) (Spanish, Argentina)
Firefox Language Pack for Español (AR) (es-AR) – Spanish, Argentina
404,330 users
Language: Polski (Polish)
Firefox Language Pack for Polski (pl) – Polish
390,555 users
English United States Dictionary
English United States (en-US) Dictionary as shipped with Firefox 115 ESR.
389,356 users
Language: 简体中文 (Simplified Chinese)
Firefox Language Pack for 简体中文 (zh-CN) – Simplified Chinese
376,263 users