Whatsapp Web Messenger 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.
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.
Webmaster SAPE Requires Restart
Toolbar contains a set of functions, which expands the abilities of webmasters and optimizers, when working in the interface of SAPE exchange.
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
Share Button for Facebook™ lets you share any web page on your Facebook™ Timeline by a quick button.
Photo Zoom for Facebook™ lets you zoom Facebook™ images.
Galaxytoolbar Requires Restart
A Firefox extension for the OGame Galaxytool to keep it up-to-date.
YouTube Video Replay is a new tool that lets you replay YouTube Videos.
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.
Youtube Video Center changes the new Youtube design and centers the whole Youtube page on the screen automatically.
YouTube Video Player Preview lets you preview YouTube videos when you hover over thumbnails.
YouTube Video Player Speed play YouTube videos in whatever speed you want
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.
Sidebar for Facebook™ brings Facebook™ right into your Firefox. Get notifications, status and photos from Facebook™ instantly.
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.
This extension to download audio and video from popular video hosting YouTube. To download the available formats mp4, webm, mp4a, mp3.
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.