Tons of features to improve your user experience on YouTube™.
Quickly and easily switch between popular user-agent strings.
TinEye is a reverse image search engine. The extension adds a context menu item so you can search for an image to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions.
Google Reverse Image Search The only add-on in this category capable of searching local files from the computer
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.
Protects your privacy by blocking spying ads and invisible trackers.
Make the web faster, more private, and more secure.
Native Dark mainly replaces the default themes of Firefox, because the light theme was adaptive in the titlebar and not the tabs. It allows for the same adaptive titlebar as the default light theme but combines the aesthetic of the dark theme's tabs.
Listen to live radio stations from around the world!
Colorify tabs with current env
Save sessions as bookmarks and sync them through Firefox Sync. Advanced Session Manager: edit, save, change, restore. But it can also be your best Bookmark Manager
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).
Finally, an efficient blocker. Easy on CPU and memory.
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
Capture a screenshot of the whole webpage, and save in your desktop in default.