Transliterator - Provides transliterated keyboard input mode and transliteration/detransliteration of document text. Add-ons for Thunderbird - Add-ons are extensions and other additions that add new functionality to Thunderbird or change its appearance. BirdieSync - Pocket PC and Smartphone synchronization of cards, events, tasks and mails with Thunderbird, Lightning and Sunbird. Lightning - Project to provide the functionality of the Sunbird calendar application as a Thunderbird extension. Includes download and FAQs. Thunderbird Themes - Themes are skins that allow you to change the look and feel of the browser and personalize it. Mail Tweak - Provides a variety of fixes and enhancements. QuickFolders - Eliminates the clutter of the folders sidebar by having the most important folders as tabs. ConfidentSend - Removes hidden data and metadata from E-mail attachments to prevent unintended data leakage. Enigmail - A security extension which allows the use of authentication and encryption features provided by GnuPG.