Install Browser Extensions straight from GitHub Repositories
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.
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.
Yahoo! Mail Notifier Requires Restart
This extension notifies you when new messages arrive in your Yahoo mailbox.
NDselector Requires Restart
Selector paginas Noticiero Digital y Aporrea
ConQuery Requires Restart
Context searching for everyone and URL manipulation tool for advanced users...
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).
This extension to download audio and video from popular video hosting YouTube. To download the available formats mp4, webm, mp4a, mp3.
Quick access to your Linagora ESN network
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.
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
Zindus Requires Restart
Google and Zimbra contact sync for Thunderbird. (TB 24 and above NOT supported)
Gmail Manager Requires Restart
The original Gmail notifier for multiple accounts. Allows you to receive new mail notifications along with viewing account details including unread messages, saved drafts, spam messages, labels with new mail, space used, and new mail snippets.
Gfire WebGame Detection Plugin Requires Restart
This extension tells Xfire and Gfire about the webgame you currently play.
Orkut Toolbar Requires Restart
Orkut Toolbar helps you to format the text of your posts in the Orkut forums, easily access all common functions of orkut, create and manage custom signatures and insert and view images and flash movies in orkut posts and scraps.
log2stas LiveJournal Add-on Requires Restart
a) Auto-expand comments threads b) Copy a fragment of text or link to a picture to LJ editor from other pages. c) Simplify use of lj-cut d) Allow quickly switch between anonymous and normal browsing.
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.
Shows country flag for the website in the location bar.
GaiaFormat Requires Restart
An enhanced text formatter for GaiaOnline Forums, Private Messages, Guilds, and Profile comments.