Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Forget Me Not - Forget cookies & other data
Make the browser forget website data (like cookies, local storage, etc.), except for the data you want to keep by adding domains to a whitelist, graylist, blacklist, or redlist.
12.702 users
Textmarker
Highly customizable text highlighter with different colors and save option for later visits. Parts of the underlying WebExtensions API are not supported on Android and ESR.
7.020 users
User-Agent Switcher and Manager
Spoofs User-Agent strings of your browser with a new one globally, randomly or per hostname
15.866 users
Swift Selection Search
Swiftly access your search engines in a popup panel when you select text in a webpage. Context menu also included!
17.915 users
Update Scanner
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
14.150 users
Hacker News Enhancement Suite
Hacker News Enhanced.
1.317 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
1.690 users
Dark Theme for Google News
Makes the layout of Google News dark while retaining the original feel.
932 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.
45.642 users
Weather Extension
The best way to see the weather right in your browser. Easier than looking outside!
11.302 users
Forecast: Google™ Weather
A lightweight and accurate weather extension for the entire globe based on Google Technology
4.135 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.
382 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).
10.876.472 users
uBlock Origin
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4.778.113 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
3.066.550 users
Easy Screenshot
Capture a screenshot of the whole webpage, and save in your desktop in default.
2.295.420 users