webext-dav4tbsync - 4.7-1~deb12u1 main

The CalDAV & CardDAV Provider for TbSync to sync contacts, tasks and
calendars to Thunderbird.
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Most CalDAV & CardDAV servers provide a discovery service, which allows
one to use just the plain server name (FQDN) like "cloud.server.com" as
server URL. TbSync will find all available calendars and address books
and there is no need to know any specific URLs for individual address
books or calendars. If this does not work because your server does not
provide the discovery service, you have to enter the full path to the
dav server itself, like "cloud.server.com/SOGo/dav".
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This provider also includes some pre-defined service profiles for easy
setup of accounts of iCloud, Yahoo!, Fruux and others.