Add-ons
Most Popular Extensions
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Restart Application Button
Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.
Torrent Tornado
Requires Restart
A Torrent Client for Firefox and SeaMonkey, runs everywhere, created in pure JavaScript without binary software!
Yoolki Arabic Keyboard
Requires Restart
Write arabic text "bil 3arabi" on any web page without the need for an Arabic Keyboard.
DownThemAll! AntiContainer
Requires Restart
Make the resources behind container pages easily downloadable by DownThemAll!
Google Privacy
Requires Restart
Make some popular websites respect your privacy settings.
Please see the known issues below!
New Mail Attention
Requires Restart
This addon calls attention to main window on new message arrival.
Save Images
Requires Restart
Save Images saves the images from the current tab page, from the cache, to a specified location, with either the images original file name or a file name that you specify.
Dictionary Switcher
Requires Restart
Toggles dictionaries automatically or manually and displays the currently selected one
Lightning Nightly Updater (Unofficial)
Requires Restart
Quickly get to the latest nightly build of Lightning relevant to the version of Thunderbird and the OS you're on.
SyncKolab
Requires Restart
SyncKolab can synchronize your calendar, address book and tasks against an IMAP server in Kolab formats version 1 (vCard/iCal) or version 2 (XML) or turn your Thunderbird/Lightning into a native Kolab Client (http://kolab.org).
Sea Fox
Zindus
Requires Restart
Google and Zimbra contact sync for Thunderbird. (TB 24 and above NOT supported)
Mnenhy
Requires Restart
The primary goal of the Mnenhy project is to make some enhancements to SeaMonkey MailNews/Thunderbird, since there're still plenty of comfort functions missing if compared to Netscape 4.x and other mail and news clients.
Duplicate This Tab
Requires Restart
This add-on provides the much needed feature update of Tab Duplication to Mozilla Browsers. Features Supported include Duplication of Browser Tabs, Detaching Tabs and Merging All Windows.
NewsFox
Requires Restart
Featured
NewsFox is an efficient 3-pane(email) style Atom/RSS feed reader.
CookieKeeper
Custom Buttons
Add-ons Manager Context Menu
Requires Restart
Add more items to Add-ons Manager context menu.
Tab Wheel ScrollTo create your own collections, you must have a Mozilla Add-ons account.
