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Google Calendar Tab Requires Restart

Adds the Google Calendar web interface as a new tab directly into Thunderbird. Creating and viewing events works just as it would in a browser like Firefox

Rated 4 out of 5 stars (104)
69 users

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SRB Lightning Requires Restart

An integrated calendar for Thunderbird build in purpose testing Serbian translation. You can download version: 1.0b2, 1.0b1 and 0.11 Inverse Edition which work with version 3.1, 3.0 and 2.0 Thunderbird. Windows, Linux and Mac are all supported.

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ThunderCal Requires Restart

ThunderCal simply gives you a toolbar button that you can use to run Google Calendar inside Thunderbird. Inspired by the ThunderWave add-on.

Rated 3 out of 5 stars (19)
14 users

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Trashcan Requires Restart

Have you ever accidentally deleted an event and didn't notice? Undo is no longer available? Then this extension is for you! All deleted items are put into a special Trashcan calendar for your safety.

Rated 2 out of 5 stars (9)
6 users

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Free/Busy Requires Restart

Publish free/busy calendar file (*.ifb) via ftp or to a file. View other people's free/busy info in meeting organizer window. Integrate Thunderbird and Outlook calendars without Exchange server.

Rated 3 out of 5 stars (14)
7 users

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Add Birthdays To Calendar Requires Restart

Birthdays from addressbook-contacts will be added as events to Lightning...

Rated 3 out of 5 stars (20)
0 users

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Eortologio - Greek Namedays Calendar (Thunderbird) Requires Restart

This extension consists of a Greek Orthodox Namedays reminder. It displays in Thunderbird status bar current day's celebrated names.

Rated 5 out of 5 stars (2)
0 users

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Repeat Borders Requires Restart

Adds darker borders to repeat events to distinguish them from single events.

Rated 4 out of 5 stars (1)
6 users

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