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Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Prevent Tab Overflow No Restart Featured
Make sure your tabs stay visible all the time.
uMatrix No Restart Featured
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
FindBar Tweak No Restart Featured
Between simple tweaks such as placing the findbar in the top corner, to the powerful "Find in All Tabs" tool, it has everything to make the Find Toolbar a powerful and accessible research tool!
Ghostery No Restart Featured
Enjoy a faster, safer and cleaner browsing experience.
Beyond Australis No Restart Featured
Australis was the code name for the current Firefox theme, it aimed to make a great browser look awesome. Now you can go one step further and also make it feel awesome to use!
Web Developer Featured
The Web Developer extension adds various web developer tools to the browser.
Show My Password Featured
You are annoyed because your password fields are always scrambled though nobody else but you can see the screen? This most advanced unscrambling addon shows your passwords in readable letters, while being fully customizable to fit your needs.
AdBlock for YouTube™ No Restart Featured
AdBlock for YouTube™ removes all annoying Ads from YouTube
Make the web faster, more private, and more secure.
DuckDuckGo Plus No Restart Featured
DuckDuckGo is the search engine that doesn't track you. We also have smarter answers and less clutter. This extension makes DuckDuckGo available in the address bar, search bar and right-click menu. Also adds a handy toolbar button with more features!
Torrent Tornado Featured
FoxyProxy Standard Featured
FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
User-Agent Switcher No Restart Featured
Quickly and easily switch between popular user-agent strings.
Password Tags Featured
Adds metadata and sortable tags to the password manager.
Classic Toolbar Buttons No Restart Featured
'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions on Windows.
Beta builds on versions page!
Clear Console Featured
One click to clear your cache, cookies, history, html5/local storage, http logins, all of them or restart your browser with/without notifications.
Location Guard No Restart Featured
Hide your geographic location from websites. Report a fake location with the addition of random noise in order to protect your privacy. Per site settings with three configurable levels of accuracy or even the possibility to use a fixed location.
Lightweight Themes Manager No Restart Featured
Manage your installed personas (lightweight themes).
FB Phishing Protector No Restart Featured
Protects you from Phishing or Scams (through XSS injection attacks) while you're on Facebook™ - Version 4.2 introduces a Tracking Protection feature as well.
Video Resumer No Restart Featured
Automatically resumes YouTube videos from where you played them last. Without this extension, for example, when you click through YouTube videos, back and forth, they always start from the beginning.