Evercontact - Your contacts always up to date and automatically with Evercontact.
AdiInviter Pro - The ultimate contacts importer and tell-a-friend system for your website.
CONTACTBOX - CONTACTBOX combines the simplicity of an address book with effective functions of a CRM system.
CloudSponge - Companies from every industry use CloudSponge’s Contact Picker to get access to their users’ address books.
Pobuca Connect - Connect with your contacts.
OpenInviter - OpenInviter is a free import contacts (addressbook) script from email providers like Mail2World...