Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Unpaywall
Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.
29,244 users
Undo Close Tab
Allows you to restore the last closed tab with just one button click and gives you access to the list of recently closed tabs in the button context menu.
27,539 users
Mate Translate – translator, dictionary
Highlights words on any web page to translate 103 languages.
30,097 users
Disconnect
Make the web faster, more private, and more secure.
200,956 users
Update Scanner
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
14,999 users
Hacker News Enhancement Suite
Hacker News Enhanced.
1,423 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
1,778 users
Dark Theme for Google News
Makes the layout of Google News dark while retaining the original feel.
1,008 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.
47,064 users
Weather Extension
The best way to see the weather right in your browser. Easier than looking outside!
11,859 users
Forecast: Google™ Weather
A lightweight and accurate weather extension for the entire globe based on Google Technology
4,321 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.
416 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).
11,223,326 users
uBlock Origin
Finally, an efficient blocker. Easy on CPU and memory.
4,932,608 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
3,151,066 users
Easy Screenshot
Capture a screenshot of the whole webpage, and save in your desktop in default.
2,350,955 users