Add-ons
essential addons
by nk23x
About this Collection
22 Add-ons in this Collection
Provider for Google Calendar
by Philipp Kewisch
205,357 users
Allows bidirectional access to Google Calendar
Enigmail
by Patrick Brunschwig
5,121 users
Helper tool to migrate your keys and important settings from Enigmail to Thunderbird 78.
User Agent Switcher
by chrispederick
187 users
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
Session Manager
by Michael Kraft
166 users
Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.
Remote XUL Manager
by Jorge Villalobos
13 users
Manages the Remote XUL whitelist to allow websites and local files to load XUL content. For versions compatible with Firefox 41 and lower, see All Versions page below.
Torrent Tornado
by Oleksandr
38 users
A Torrent Client for Firefox and SeaMonkey, runs everywhere, created in pure JavaScript without binary software!
Mozilla Archive Format, with MHT and Faithful Save
by Christopher Ottley, Paolo Amadini
44 users
— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!
Disable Add-on Compatibility Checks
by Kris Maglione
253 users
Reinstates the extensions.checkCompatibility preference without respect to the current application version.
Copy Urls Expert
by Kashif Iqbal Khan
13 users
Copy multiple urls (links) to clipboard. Provides options to copy urls of all opened tabs and urls in selected text. You can customize the format of copied urls. You can also open multiple links from clipboard.
YesScript
Scriptish
by Erik Vold, Nils Maier, others
11 users
The greatest user script engine on the Internet (a fork of Greasemonkey).
IMAP Received Date
by Jonathan Kamens
162 users
Make the “Received” column in IMAP folders show when messages were actually received.
QuickPasswords
by Realraven (Axel Grude)
42 users
Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.
Now also includes SSO change (multi-domain pw) and Backup + Restore.
Compact Menu 2
by Milly
21 users
Add a compact menu button to the navigation toolbar, and hide the menu bar.
Copy As Plain TextWhat are Collections?
Collections are groups of related add-ons that anyone can create and share.
Explore CollectionsTo create your own collections, you must have a Mozilla Add-ons account.
