Provider for Google Calendar Requires Restart
Allows bidirectional access to Google Calendar
Addons Recent Updates Requires Restart
Show more addons recent updates
InfoLister Requires Restart
Lists installed add-ons (extensions, themes, plugins). Mozilla does not allow me to publish the version compatible with Firefox 48+, see http://forums.mozillazine.org/viewtopic.php?f=48&t=2084957&p=14715558#p14715558 for details.
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.
tzpush Requires Restart
Z-Sync to Thunderbird Addressbook
Will sync Thunderbird address book to Zentyal, Zarafa, Horde and outlook.com/hotmail.
With MyAdFilter, free content creators propose you only one ad. Apart from those, as your usual ad-blocker, MyAdFilter disables all ads.
OverbiteFF Requires Restart
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.
Extension List Dumper 2 Requires Restart
This extension adds a button ("Dump list") to the Add-ons window. When this button is pressed, a new window is opened with the list of installed extensions, themes or plugins...
Generate e-bay templates online - in few minutes.
BBCodeXtra Requires Restart
(Sorry, no plans to port this add-on to Webextensions)
BBCodeXtra is an extension, compatible with Mozilla FireFox (up to 57) and Seamonkey, which adds to the context menu new commands to insert BBCode/Html/XHtml codes in an easy and fast way...
ChatZilla Requires Restart
A clean, easy to use and highly extensible Internet Relay Chat (IRC) client.
XDM Hook for Linux & Mac OS X Requires Restart
XDM integration module for Firefox on Linux and Mac
Important note: This extension will not work in Firefox 57 and above. Providing this functionality in Firefox is no longer possible, the extension is discontinued.
Copy Plain Text 2 Requires Restart
Copies text without formatting
Reinstates the extensions.checkCompatibility preference.
Addons Quick Search Requires Restart
Type first letters of add-on name to find them in the list or press Ctrl+↑/↓ to switch between add-ons categories.
Additionally remember and restore last selected item in each list.
Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.
Scrapbook X CopyPageInfo Requires Restart
Copies the information from ScrapBook data items.
XDM Hook Requires Restart
XDM integration module for Firefox