Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Cookiebro - Cookie Manager
Advanced cookie manager for easy cookie management and automatic deletion of unwanted cookies. Supports whitelist & blacklist and provides an easy-to-use interface for whitelisting domains. View, Edit, Create, Search cookies in Cookie Editor.
5,652 users
Grammar and Spell Checker - LanguageTool
With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
46,284 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
3,097,610 users
Cookie AutoDelete
Control your cookies! This WebExtension is inspired by Self Destructing Cookies. When a tab closes, any cookies not being used are automatically deleted. Whitelist the ones you trust while deleting the rest. Support for Container Tabs.
165,491 users
Hacker News Enhancement Suite
Hacker News Enhanced.
1,474 users
Update Scanner
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
14,638 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
1,801 users
Dark Theme for Google News
Makes the layout of Google News dark while retaining the original feel.
1,051 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.
46,455 users
Weather Extension
The best way to see the weather right in your browser. Easier than looking outside!
11,880 users
Forecast: Google™ Weather
A lightweight and accurate weather extension for the entire globe based on Google Technology
4,296 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.
428 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).
11,027,851 users
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
4,855,695 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
3,097,610 users
Easy Screenshot
Capture a screenshot of the whole webpage, and save in your desktop in default.
2,236,872 users