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TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.

Rated 4 out of 5 stars (268)

58,563 users

Works with Thunderbird 136.0 - 138.*
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This extension is no longer needed. Thunderbird has native CalDAV and CardDAV support.

Rated 5 out of 5 stars (55)

17,656 users

Works with Thunderbird 128.0 - *
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Add-ons