Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
HTTPS Everywhere
Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.
518 843 users
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1 165 058 users
Adblock Plus
Blocks annoying video ads on YouTube, Facebook ads, banners and much more. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
11 176 639 users
Google Search Fixer
Override the user-agent string presented to Google Search pages to receive the search experience shown to Chrome.
7 685 users
Update Scanner
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
14 994 users
Hacker News Enhancement Suite
Hacker News Enhanced.
1 471 users
Latest BBC News
Displays latest BBC News in a popup widget Get all the latest BBC News headlines with a single click. Opens a popup widget with the latest news headlines. Quick access to Business Health Science & Environment Technology Entertainment
1 812 users
Dark Theme for Google News
Makes the layout of Google News dark while retaining the original feel.
1 043 users
Forecastfox (fix version)
Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.
47 134 users
Weather Extension
The best way to see the weather right in your browser. Easier than looking outside!
12 008 users
Forecast: Google™ Weather
A lightweight and accurate weather extension for the entire globe based on Google Technology
4 355 users
Toolbar Weather
This extension shows in your toolbar the current weather and the degree in Celsius, when you click is possible see more details about the weather on your city. In addition to being able to view the forecast for the next 24 and 48 hours.
429 users
Adblock Plus
Blocks annoying video ads on YouTube, Facebook ads, banners and much more. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
11 176 639 users
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
4 921 907 users
Cisco Webex Extension
Join Webex meetings using Firefox ™
1 975 560 users
NoScript Security Suite
The best security you can get in a web browser! Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks, "Spectre", "Meltdown" and other JavaScript exploits. Fx52? https://noscript.net/getit
1 515 002 users