Adds a small and simple button to YouTube videos that allows you to quickly download the audio of the video as an MP3 file (quality of the MP3 is as high as the video offers) without having to leave the page.
Zindus Requires Restart
Google and Zimbra contact sync for Thunderbird. (TB 24 and above NOT supported)
Web Messenger for WhatsApp™ brings WhatsApp right into your browser to chat with your friends.
Save images and pages to your Pinterest account quickly and easily with Save Button for Pinterest.
Install Browser Extensions straight from GitHub Repositories
YouTube Video Player Speed play YouTube videos in whatever speed you want
Sidebar for Facebook™ brings Facebook™ right into your Firefox. Get notifications, status and photos from Facebook™ instantly.
ALLYouTubeDownloader Requires Restart
ALLYouTubeDownloader extention (FLV/MP4/WebM; HD/HQ). Windows only. Works only with ALL YouTube Downloader 2.3 application or higher (versions 2.2 and lower doesn't work anymore).
Messenger for Facebook™ lets you bring a Messenger right into your browser to chat with your friends.
Yahoo! Mail Notifier Requires Restart
This extension notifies you when new messages arrive in your Yahoo mailbox.
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.
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.
Share Button for Facebook™ lets you share any web page on your Facebook™ Timeline by a quick button.
YouTube Video Replay is a new tool that lets you replay YouTube Videos.
Youtube Video Center changes the new Youtube design and centers the whole Youtube page on the screen automatically.
Toolbar Button for Facebook™ lets you visit your favorite Facebook™ quickly and easily by adding a special button to your Toolbar.
LinkedTop Helper Requires Restart
Helper for working with LinkedTop.
Pins a YouTube video to the page so that it is always visible while you scroll and read comments. Port of Chrome's Video Pinner extension
NDselector Requires Restart
Selector paginas Noticiero Digital y Aporrea
Access to full-resolution product images and videos on various shopping sites is easy with this add-on. It adds links to the largest/xxl/best-size version of product images on various shoppings sites.
Open-source code on github.com/ShopCompanion