Most Popular Extensions
MonkeyFix Requires Restart
Fixes up numerous SeaMonkey browser interface issues (eg. adding support for popup ALT attributes), as well as adding some handy features for developers and power users (eg. configure source viewer, work online/offline).
EmotiConverter Requires Restart
Post your best emoticons of the easiest and fastest way.
LastColour Requires Restart
Colour your text to the "last-picked" colour you chose in the colour-picker. Now you don't have to use the colour picker every time.
Creates XPI files of extensions you have installed.
This extension to download audio and video from popular video hosting YouTube. To download the available formats mp4, webm, mp4a, mp3.
Search YouTube For This Requires Restart
Right click on selected or a link click search YouTube For Video of in the menu, a new tab will open with the searched text.
TaQuilla Requires Restart
Automatic tagging using Bayesian statistics
WDownloader plugin for Firefox
Use wheel mouse on videos to control video/audio/quality.
Choose flash/HTML5 on YouTube, autopause on background tabs, embedded videos.
And much more!
A button that lists all the about pages that exist. Some of these pages are also provided as separate buttons.
Adds a few buttons to help with page navigation, including Page Top, Page Bottom, Page Down and Page Up.
XPCOMViewer Requires Restart
XPCOMViewer is tiny tool for exploring XPCOM components.
Page Hacker Revived Requires Restart
Adds a toolbar to edit and format the current page
Tab Clicking Options Requires Restart
Select actions for various clicking events on a tab or the tab...
Google Cache lets you visit retrieve the web page from Google Web Cache when the site is offline.
Hide the caption of Firefox
XDM Hook for Linux & Mac OS X Requires Restart
XDM integration module for Firefox on Linux and Mac
Dictionnaire des synonymes FR Requires Restart
Adds to browser French(FR) synonyms dictionary from package LibreOffice.
Synonym-Wörterbuch DE Requires Restart
Adds to browser German(DE) synonyms dictionary from package LibreOffice.