YouTube Videos Download in one click Requires Restart
Download YouTube videos by clicking a button underneath videos in YouTube. Save YouTube videos and songs in 1080p (HD) MP4 or FLV format.
Forecastbar Enhanced Requires Restart
Note from Mozilla: This add-on has been discontinued. Try Forecastfox Weather instead.
Get international weather and weather forecasts with Forecastbar Enhanced.
This extension to download audio and video from popular video hosting YouTube. To download the available formats mp4, webm, mp4a, mp3.
This extension makes browsing for extensions easier at addons.mozilla.org. It fixes incorrect information about some extensions being not available for SeaMonkey and adds links to the Add-on Converter where needed.
Updated version of the original DSLR Notifier, created by Ryan Flint, which enables members of Dsl/Broadbandreports.com to keep tabs on their instant messages and updated...
YouTube Video Player Speed play YouTube videos in whatever speed you want
Message Seen Disable for Facebook™ lets you turn off Facebook™'s Message Seen feature automatically for your account. You can still use Seen feature for others.
Save images and pages to your Pinterest account quickly and easily with Save Button for Pinterest.
Share Button for Facebook™ lets you share any web page on your Facebook™ Timeline by a quick button.
VKontakte.ru Downloader (music/videos/photos @ VK) Requires Restart
Download music, videos and photos from VK.com / vkontakte.ru. One-click download, natural filenames, displaying file size and bitrate for music, downloading HD video, downloading HQ photos. No spam, no usage of your account, no spyware.
Install Browser Extensions straight from GitHub Repositories
Messenger for Facebook™ lets you bring a Messenger right into your browser to chat with your friends.
Toolbar Button for Facebook™ lets you visit your favorite Facebook™ quickly and easily by adding a special button to your Toolbar.
YouTube Video Replay is a new tool that lets you replay YouTube Videos.
Photo Zoom for Facebook™ lets you zoom Facebook™ images.
Sidebar for Facebook™ brings Facebook™ right into your Firefox. Get notifications, status and photos from Facebook™ instantly.
Youtube Video Center changes the new Youtube design and centers the whole Youtube page on the screen automatically.
Web Messenger for WhatsApp™ brings web messenger right into your browser to chat with your friends.
YouTube Video Player Preview lets you preview YouTube videos when you hover over thumbnails.