Duplicate Tabs Closer Featured
Detects and automatically closes duplicate tabs.
An easy-to-use tab reloader with custom reloading time settings for individual tabs
Font Finder Requires Restart Featured
FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.
Reload Plus Featured
Supercharge your reload button and hotkeys!
Right-click on a section of text and click on Translate icon next to it to translate or listen it to your language.
Private Tab Featured
Adds private tabs.
Classic Toolbar Buttons 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.
Beta builds on versions page!
YouTube™ Control Center Featured
YouTube Control Center is an open-source project that aims to enhance the overall YouTube experience by providing the end user with more control in what the playback process is concerned.
YouTube Enhancer Plus Requires Restart Featured
Improve your watching experience! Ad Blocker, Autoplay Manager, Auto HD, Auto Replay, Cinema Mode, and more.
Greasemonkey Requires Restart Featured
BetterPrivacy-signed Requires Restart Featured
Control a new, trickier kind of cookie, better known as an LSO or Flash cookie. The BetterPrivacy safeguard offers various ways to handle Flash-cookies created by webpages with the help of your Flash plug-in...
Tile Tabs Requires Restart Featured
Displays tabs in tiled layouts in Firefox. Arrange tiles horizontally, vertically or in a grid. Resize tiles by dragging splitter bars. Tabs and links can be dragged to open in other tiles. Supports multiple tiled layouts. Works with tab groups.
Shut down the lights on YouTube.
Emoji Cheatsheet Featured
A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook.
Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.
Messenger & Notifier for Facebook™ Featured
provides an easy access to messenger.com and notifies you of all new messages (via badge icon text)
Copy Plain Text 2 Requires Restart Featured
Copies text without formatting
DuckDuckGo Plus Featured
DuckDuckGo is the search engine that doesn't track you. This add-on makes DuckDuckGo your default search engine and includes some other useful features.
Tab Groups Featured
Tab Groups are an easy way to organize a lot of tabs. You can visually group related tabs, switch between groups, and quickly search through all of your tabs to switch to a specific one.
Ghostery Compatible with Firefox 57+ Featured
Increase your browsing privacy, protection, and speed.