YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.
YouTube Flash Video Player is a powerful tool that will let you choose Flash video player as default YouTube video player.
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
Save images and pages to your Pinterest account quickly and easily with Save Button for Pinterest.
YouTube Video Download and Convert is the powerful add-on that lets you collect all media information available on YouTube. Advanced power panel lets you download, preview, play with and convert all media right inside Firefox.
Flash Video Player for Facebook™ is a powerful tool that will let you choose Flash video player as default Facebook video player.
Reader is the ultimate Reader tool for Firefox.
Google Reverse Image Search is a simple tool that lets you search the images reversely on Google Images and find the other copies of the very image you are looking for on the web.
Manage site-specific zoom levels and color settings
Google Keep Notes brings Google Keep right into your Firefox Sidebar.