Dorando keyconfig Requires Restart
A modified Dorando's tool to rebind keys in Mozilla apps. It is designed to be a drop-in replacement, and will keep your old settings. (See details for upgrade instructions.)
AutoProxy-ng Requires Restart
This is a fork of AutoProxy, which can run the latest version of Firefox.
Copy Plain Text Requires Restart
Copies text without formatting...
TB QuickMove Extension Requires Restart
You can now move (or copy ) messages to common folders quickly...
Environment Proxy Requires Restart
Sets proxy settings from environment variables.
Unifinder Views Requires Restart
Add more views to the unifinder (event list) in Sunbird and Lightning.
Keyfixer Requires Restart
(Note: Version 0.5.34 has been updated to work with Firefox 34)
Keyfixer patches the key bindings for Mac OS X users of Firefox and Thunderbird to match the key bindings of Windows
SortRecipients Requires Restart
SortRecipients lets you alphabetically sort the recipients lists (To/Cc) when composing a message, simply by clicking the Sort button, which it adds to the Compose window toolbar.
Compose for Thunderbird Requires Restart
THIS ADDON IS UNMAINTAINED, SEE BELOW.
Compose messages the new hip way! Allows you to compose in a tab with a new editor and an improved autocomplete.
CopyHeader Requires Restart
GlassMyBird enables more AeroGlass effects than the default Thunderbird theme (only possible on Windows Vista and 7 when AeroGlass is enabled). See instructions inside add-on description how to enable Glass on Windows 8.
No Close Other Tabs Requires Restart
Removes "Close other tabs" context menu item.
This addon adds some Android Debug Bridge access to Firefox. It requires access to the adb/adb.exe executable from the Android SDK.
Google+ Share for Thunderbird Requires Restart
Share a URL in Google+ directly from Thunderbird. This addon is the Thunderbird XUL version of Google+ Share for Firefox Desktop.
Makes the application to the default client on every startup.
FileRun for Filelink Requires Restart
Add FileRun support to Thunderbird's Filelink feature.
Crash yourself with ease
Delete Junk Context Menu Requires Restart
Adds 'Delete Mail Marked as Junk' to folders' right click...
mailconsole Requires Restart
This extension helps you to manage thunderbird mails using console commands like: dir, select, move, copy, delete, mark. The names and the syntax has been taken from the OpenVMS mail...