A Handy Address Book Server 

Web-based address books for sharing contacts among multiple users in an office, making a corporate directory, networking your address book for access on multiple computers, or making your addresses available no matter where you travel.
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Addressinator! 

Addressinator! address book software is networkable, searchable, includes customizable field names and placement, group contacts for bulk email features , printing or searching, import and export, easy copy to other programs, and many more features
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