Up & Coming Extensions
Restartless Restart No Restart
This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart Firefox or Seamonkey.
Transforms typed or static text to L337, ROT13, BASE64, HEX, URL, BIN, DES, AES, Morse code, DVORAK keyboard layout and to lower/to upper case functionality, Leet Font...
Let's show the calendar color on Lightning reminders!
Rise of the Tools No Restart
Moves the toolbar back above the tabbar.
Thunderbird Extension: AutoSend Unsent Messages. Flushes entire outbox at regular intervals.
GNOME Keyring integration
This Thunderbird addon let you customize the behaiour of the IMAP quota statusbar panel.
Adds metadata and sortable tags to the password manager.
Clean up your inbox! While moving a mail the first time, QuickArchiver remembers the destination folder and enables you to move further mails with a single click. You can apply rules by sender, recipient and subject.
Slim Add-ons Manager No Restart
The Add-ons Manager slims down!
This add-on reduces the height of entries in the Add-on Manager, so you can display more of them at a time.
Allows URI texts written in webpages to be loaded by double clicks.
Z-Sync to Thunderbird Addressbook
Will sync Thunderbird address book to Zentyal, Zarafa, Horde and outlook.com/hotmail.
Makes everyday entries to forms & forums simpler!
Add a sig. with just a Rclick of the mouse and select 'Add Sig.' from the context menu.
(Please, note: What you see in the pic is only an example. ThoseRMine Sorry, you have to make your own tabs. )
OpenSearch is a Mozilla Messaging addon that will allow you to search the web from within Thunderbird.
Displays the Exif and IPTC data in local and remote JPEG images.
Disable Add-on Compatibility Checks No Restart
Reinstates the extensions.checkCompatibility preference without respect to the current application version.
Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey
Add adressbook button to "mode toolbar" (requires lightning extention)
NoiaButtons No Restart
The 'NoiaButtons' add-on offers cartoonish toolbar button icons (known from Noia themes) for default theme and lightweight themes. Further more lite silver and dark versions of Noia themes are included.