Review for CardBook by GrizzlyAK
Rated 5 out of 5 stars
If you're tired of waiting for Mozilla to add "reasonably functional" Address Book, then CardBook is the answer. It excels in every way and provides much greater capabilities and works well with CardDAV. You can also vote to have it replace Mozilla's built-in.
This review is for a previous version of the add-on (84.4).To create your own collections, you must have a Mozilla Add-ons account.