Review for TbSync by JC75
Rated 5 out of 5 stars
Works perfectly on TB78 with Google Agenda & Contacts, very easy configuration ! thank you so much.
Install "Provider for CalDAV & CardDAV" and also "TbSync" from the same developer.
Then change this setting following the instructions from the developer : https://github.com/jobisoft/DAV-4-TbSync/issues/240
To create your own collections, you must have a Mozilla Add-ons account.