Extensions by Weekly Downloads
disablemenu Requires Restart
This extension allows you to show/hide the main menu. It can be accessed through a toolbarbutton, keyboard shortcut and popup-menu-item. It also supports autohide. the statusbar can optionally be hidden.
Unified Search Requires Restart
Compare Bing, Wolfram, Wikipedia, Delicious, Stumbleupon with Google side-by-side, get the best of these very different search engines, content providers, and social bookmarks
Extension Manager Extended Requires Restart
Use the Addon Manager to view the id, date installed, compatible application versions, and the folder of an extension or theme. Check http://extended.spanglerco.com for more information and http://firefox.spanglerco.com for more extensions...
The Saloon Bar Requires Restart
The Saloon Bar provides sidebar support for The West (http://www.the-west.net) online game.
Fire Eagle Updater Requires Restart
Fire Eagle helps you take your location to sites and services around the web. With one click from your browser toolbar, the Fire Eagle Updater Add-on updates your location on all your favorite Fire Eagle-enabled sites.
Chicago Bus Tracker Requires Restart
Displays service bulletins and bus stop arrival times for your favorite CTA bus routes.
Geo Requires Restart
Opens useful sites for pages geographically marked with ICBM or geo.position META.
As the use of these meta elements has been niche, at best, I'm discontinuing future support for Firefox 4 and above.
FlagTab Requires Restart
Mark/flag tabs via an unlimited amount of customizable colors. Quickly group and bookmark tabs based on color. Persistently label/color tabs by url/regex. Other optional features: relative tabs, highlight unread tabs, color favicon, and auto-flag.
Filter Extensions Requires Restart
Adds a search box and a filter drop-down to the Addons window, to filter your installed extensions.
Open In Current Tab Requires Restart
Adds an entry into the context menu for links that forces it to open in the current tab.
PackageMapping.com Extension Requires Restart
Track and Map packages from the right-click menu...
Steam Powered Forums Browser Updated Requires Restart
An addon for easy browsing of the SteamPowered Forums
Fancy Numbered Tabs Requires Restart
Replaces the close tab graphic with numbers to help with quick tab navigation via CTRL + [1-8] or Alt + [1-8].
IMDb + Clipland Requires Restart
Integrates Clipland's short form expertise into IMDb videographies.
Visitation Cloud Requires Restart
The Visitation Cloud Add-on generates a cloud of the top 30 most visited web sites in your Firefox Browser's History. Each web site's domain name is a hyperlink.The cloud can be saved as SVG, PNG or JPG and can be posted on Facebook easily.
Focus Last Tab Requires Restart
Easily switch back and forth between the last two focused tabs
580k Requires Restart
Twiference Sidebar Requires Restart
Twiference Sidebar discovers hot web pages in the site you are reading using twitter search.
Google Docs Preview Requires Restart
Adds "Google Docs Preview" to the right-click menu for links
The Official Real Madrid Club de Futbol Toolbar Requires Restart
The Official Real Madrid Futbol Club add-on keeps you in touch everything Real Madrid, from news and tickets to Twitter and videos.