Miscellaneous

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Send Later

True "Send Later" functionality to schedule the time for sending an email.

Rated 5 out of 5 stars (36)
52,577 users
Updated July 30, 2015

Copy Plain Text 2

Copies text without formatting

Rated 5 out of 5 stars (57)
34,838 users
Updated July 28, 2015

Lightning 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.

Rated 3 out of 5 stars (1,851)
3,228,679 users
Updated July 24, 2015

BBCodeXtra

BBCodeXtra is an extension, compatible with Mozilla FireFox and Seamonkey, which adds to the context menu new commands to insert BBCode/Html/XHtml codes in an easy and fast way...

Rated 5 out of 5 stars (61)
6,356 users
Updated July 9, 2015

Mouse Gestures Suite

Mouse gestures for SeaMonkey & Firefox: navigate & execute commands using mouse gestures (with single mouse button) and rocker gestures (by pressing 2 mouse buttons). Also: scroll wheel navigation, page scrolling, tab scrolling.

Rated 5 out of 5 stars (19)
5,915 users
Updated July 7, 2015

Session Manager No 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.

Rated 4 out of 5 stars (555)
269,940 users
Updated July 7, 2015

about:config Button No Restart

Open about:config to change hidden settings that cannot be edited from the Options window. All Mozilla based programs have settings that can not be changed in the options window.

Not yet rated
352 users
Updated July 2, 2015

Year view

Year view for calendar.

Rated 4 out of 5 stars (44)
3,952 users
Updated July 1, 2015

Lightbird

Standalone calendar UI for Lightning

Rated 5 out of 5 stars (9)
4,209 users
Updated June 22, 2015

Screen-sharing extension for snap.md No Restart

Screen-sharing extension for snap.md

Not yet rated
67 users
Updated June 16, 2015

Flexible Identity

Selects an identity based on the recipients list when sending an email

Rated 4 out of 5 stars (21)
1,520 users
Updated June 16, 2015

Free Memory Button No Restart

Free unused memory that Firefox is currently using.

Rated 5 out of 5 stars (2)
2,961 users
Updated June 11, 2015

About:about Button No Restart

A button that lists all the about pages that exist. Some of these pages are also provided as separate buttons.

Rated 5 out of 5 stars (1)
144 users
Updated June 11, 2015

Find Buttons No Restart

Adds buttons to open and manage the find bar.

Not yet rated
54 users
Updated June 11, 2015

gContactSync

Synchronizes contacts & groups between Thunderbird or SeaMonkey and Google Contacts. Imports Facebook friends, contacts you follow on Twitter, and more.

Rated 4 out of 5 stars (193)
52,392 users
Updated June 7, 2015

Add-on Preferences Button No Restart

Displays a menu that allows you to open the option/preference window for any add-on that has one.

Rated 4 out of 5 stars (1)
183 users
Updated June 6, 2015

SmartTemplate4

SmartTemplate4 offers an easy way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every account as well as for the default (all email accounts). Also supports the Stationery Add-on.

Rated 5 out of 5 stars (49)
17,001 users
Updated June 6, 2015

Restart App Button No Restart

Restart the current application, as you might need to do after installing a new extension or theme.

Rated 5 out of 5 stars (1)
195 users
Updated June 2, 2015

Add-ons Button No Restart

Opens the Add-ons window to perform tasks on your installed Extensions, Themes, Plug-ins and Language packs.

Not yet rated
846 users
Updated June 1, 2015

Bitcoin Venezuela No Restart

Add-on to see the average price of Bitcoin and shortcut for Bitcoin Venezuela.
Currency money:
USD = USA
EUR = Europe
VEF = Venezuela
ARS = Argentina

Rated 5 out of 5 stars (2)
18 users
Updated June 1, 2015