Calendar and Date/Time

Subscribe

Show Calendar Week

Shows the calendar week Thunderbird/Lightning calendar's moth and multi-week view.

Rated 5 out of 5 stars (5)
2,687 users
Updated May 4, 2016

NoiaButtons No Restart

The 'NoiaButtons' add-on offers cartoonish toolbar button icons (known from Noia themes) for default theme and lightweight themes. Further more lite silver and dark versions of Noia themes are included.

Rated 5 out of 5 stars (14)
15,086 users
Updated May 2, 2016

Zonio Freebusy for Lightning

Finds when are people available for a meeting or event via Zonio Freebusy service. Displays freebusy blocks instantly in Invite Attendees window while attendees are being added. Works with both local calendar storage or any calendar provider.

Not yet rated
2 users
Updated April 29, 2016

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 (1,918)
5,683,883 users
Updated April 25, 2016

Send Later

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

Rated 5 out of 5 stars (47)
63,107 users
Updated April 12, 2016

EDS Calendar Integration

Integrates calendars events with Gnome clock applet

IMPORTANT:
Plugin may hang on Fedora.
As a workaround uninstall evolution-ews.

Rated 4 out of 5 stars (7)
332 users
Updated March 21, 2016

Task Me (activity logger)

Activity logger (sampled task monitoring) which uses calendar to store user's activities.

It periodically displays window with textbox where user can put description of currently performed tasks. The description is saved in a calendar.

Rated 4 out of 5 stars (2)
42 users
Updated March 7, 2016

G-Hub Lite

Add Google Tabs to Thunderbird! Services supported: Voice, Calendar, Drive, Docs, Sheets, Slides, Hangouts, Plus, Photos, Contacts, News, Maps, & many more. Need Google Apps? Check out G-Hub Pro: http://www.schiffner.com/index.php/software/g-hub-pro

Rated 4 out of 5 stars (3)
3,497 users
Updated November 23, 2015

NirvanaHQ

NirvanaHQ for Thunderbird

Not yet rated
11 users
Updated October 26, 2015

Lightning Colors Reminder

Let's show the calendar color on Lightning reminders!

Not yet rated
3,506 users
Updated October 23, 2015

OBM Connector

OBM Lightning Calendar and addressbooks connector

Not yet rated
915 users
Updated September 25, 2015

StormCows

Allows two-way access between Remember The Milk and calendar events or todo items.

Rated 4 out of 5 stars (10)
415 users
Updated September 13, 2015

MultiBirthdaysReminder

This addon is now integrated into the new address book CardBook : https://addons.mozilla.org/thunderbird/addon/cardbook/ (and thus it is no longer maintained)

Rated 5 out of 5 stars (6)
438 users
Updated September 9, 2015

Copy Reminder List To Clipboard No Restart

Provides button to copy the list of current reminders to the clipboard.

Not yet rated
54 users
Updated September 2, 2015

Lightning Reminder Left Buttons

Tired to mistakenly press that "Dismiss All" button? Move the Lightining Reminder "Snooze all for" and "Dismiss All" buttons to the LEFT!
... and from version 2.0 you can keep them on the RIGHT, but swapped!

Rated 4 out of 5 stars (1)
864 users
Updated July 18, 2015

Purge Events Plus

Purge events from Sunbird and Lightning files and thereby cleanes the calendar

Rated 4 out of 5 stars (9)
1,137 users
Updated July 2, 2015

Lightning Calendar Tabs

Displays tabs which allows quick navigation between time periods in Lightning calendar. All views of calendar are supported. Color of tab texts can be adjusted.

Rated 4 out of 5 stars (8)
26,187 users
Updated June 18, 2015

Simple Week View

A simple week view for Lightning, as in the print layout.

Rated 3 out of 5 stars (3)
572 users
Updated February 9, 2015

More Snooze

This add allow to customize the snooze delay when snooze popup appears (lightning required).

Rated 5 out of 5 stars (5)
1,257 users
Updated November 21, 2014

Date on Thunderbird

在thunderbird statusbar显示年月日

Rated 4 out of 5 stars (1)
24 users
Updated August 28, 2014