Featured Extensions
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DownThemAll!
Featured
The first and only download manager/accelerator built inside Firefox!
FlashGot Mass Downloader
Requires Restart
Featured
Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.
Lightning
Requires Restart
Featured
Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.
NewsFox
Requires Restart
Featured
NewsFox is an efficient 3-pane(email) style Atom/RSS feed reader.
Enigmail
Featured
OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.
To create your own collections, you must have a Mozilla Add-ons account.