BirdieSync
Synchronize your Android, Pocket PC, or iPhone with Thunderbird and Sunbird.
Cisdem ContactsMate 4.2.0
Cisdem ContactsMate: Sync, Create, find, manage, group, fix, and export your Contacts. Try it now!
Nextcloud Contacts
The Nextcloud contacts app is a user interface for Nextcloud’s CardDAV server.
OpenInviter
OpenInviter is a free import contacts (addressbook) script from email providers like Mail2World…
GNOME Contacts
All your contacts in one place.
ContactBase
The address book app for business.
LibreContacts
Add WhatsApp profile photos to your phone contacts.
FullContact Card Reader
Automagically scan biz cards into LinkedIn/Gmail contacts.
CloudSponge Address Book Widget
Let your users look up contacts without leaving your site.
Contactzilla
Contact management made simple.