SmartTemplate4 Requires Restart
SmartTemplate4 offers an easy way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every account as well as for the default (all email accounts). Also supports the Stationery Add-on.
Sun Cult Requires Restart
Worldwide Sunrise, Sunset, Twilight, Moonrise and Moonset...
Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.
bioFOX Requires Restart
Bioinformatics tools on Mozilla based browsers
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.
Select link's text just like a regular text (like in Opera'12 browser) - Select like a Boss ;)
PrefBar Requires Restart
Irvine ContextMenu Requires Restart
Downloads links and images with Irvine.
Youtube Video Center changes the new Youtube design and centers the whole Youtube page on the screen automatically.
Select link text with easy mouse gestures.
Search in the address bar without changing your search engine.
Twitter App brings Twitter right into your Firefox Sidebar.
Console² Requires Restart
QuickNote Requires Restart
A simple note-taking extension.
Screengrab (fix version) Requires Restart
Screengrab! saves webpages as images.
New features: upload to internet
Identity Chooser Requires Restart
Identity Chooser helps you to always use the correct identity when composing a new email.
Menu Wizard Requires Restart
Customize menus : Helps removing, moving and renaming menus and menu items
Colorize important menu for ease of use! (use Style (CSS))
Change or disable any of used keyboard shortcuts
Support: Firefox, Thunderbird and SeaMonkey
MinimizeToTray For FF 3.5 Requires Restart
MinimizeToTray For firefox 3.Minimizes Mozilla windows into the system tray.Note:I am going to remove this extension if the original creator make a FF 3 version!
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.
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...