Rated 5 out of 5 stars
This has been a game changer for me - from the lumbering, old, built-in Address Book to something that is a quantum leap forward.
Even with the great Add-on "MoreFunctionsForAddressBook" at https://freeshell.de/~kaosmos/morecols-en.html the poor old built-in Address Book just can't compete any longer with CardBook.
Mozilla would do well to introduce CardBook as a complete replacement for Address Book especially as the import function in CardBook works quite well.
CardBook will even properly sync ID photos for online address books.
Frequent attention via frequent updates inspires confidence.
Thank you and well done to Philippe V.