Addressbooks Synchronizer is a Thunderbird extension which synchronizes selected addressbooks.

Remember Mismatched Domains is a Thunderbird extension which adds a "Don't warn me about this certificate for this domain" box.

Greek Spelling dictionary is a Thunderbird extension for spellchecking Greek.

British English Dictionary is an extension that packages David Bartlett's British English Dictionary R1.19 for Thunderbird.

Romanian Dictionary is a Thunderbird extension based on L. Constantin's Romanian Dictionary and it;'s a translation quide.

Hungarian Dictionary is a Thunderbird extension is based on Lбszlу Nйmeth's Hungarian Dictionary.

Nederlands Woordenboek is a Dutch dictionary for Thunderbird that is used for spellchecking.

SwitchProxy Tool is a Thunderbird extension which lets you manage and switch between multiple proxy configurations quickly and e

Update Notifier is an extension which notifies you when updates are available for your extensions and themes.

Torbutton provides a button to easily enable or disable the use of Tor.

ChinesePera-kun is a Chinese dictionary popup modded from Perapera-kun.

Splash is a Thunderbird extension that adds a custom splash screen at startup.

Menu Editor is a Thunderbird extension that allows customizing application menus.

Conversation Meta Language has the purpose of exchanging emails between two persons using XML.

Text size toolbar is a simple Thunderbird extension that adds text size buttons to the toolbar.

Locale Switcher extension provides simple way to switch between languages through a menu.

Get Selected Messages extension adds the button on the toolbars "Get Selected Messages".

Skype Toolbar For Thunderbird is an extension that combines the strenght of Thunderbird and Skype.

CuteMenus - Crystal SVG is a handy extension which adds icons to every menu in 6 different programs!

Maximize Message Pane is an extension that collapses thread pane.

Table2Clipboard allows to select rows and columns from a table and copy them to clipboard.

withAttach extension adds a menu option to compose an email "with attachments".

Quicktext is an extension for Thunderbird that lets you to easily insert templates into your own emails.

PeraPera-kun extension added the despirately needed ability to export words you highlight to the latest version called Rikaichan

Check and Send is a Thunderbird extension which checks the message before sending.