Review for Contact Tabs by sayanvd
Rated 4 out of 5 stars
Until now, I've used the "Contacts Sidebar" add-on, but since version 52 TB it does not work and the author has not fixed it for a long time.
The "Contacts Tabs" add-on can be used instead of "Contacts Sidebar", but its functionality is still required. In addition to removing certain restrictions, you need to add the ability to search the address book GROUP (LISTS).
To create your own collections, you must have a Mozilla Add-ons account.