Computers

Add-ons are extensions and other additions that add new functionality to Thunderbird or change its appearance.

Pocket PC and Smartphone synchronization of cards, events, tasks and mails with Thunderbird, Lightning and Sunbird.

Removes hidden data and metadata from E-mail attachments to prevent unintended data leakage.

A security extension which allows the use of authentication and encryption features provided by GnuPG.

Project to provide the functionality of the Sunbird calendar application as a Thunderbird extension. Includes download and FAQs.

Eliminates the clutter of the folders sidebar by having the most important folders as tabs.

Themes are skins that allow you to change the look and feel of the browser and personalize it.

Provides transliterated keyboard input mode and transliteration/detransliteration of document text.