Addressbook Tool download

The Address Book is a great tool to manage contacts securely, as it is sandboxed and can only access the address book.

Alternative apps

Helps you find duplicated contacts on your address book app.

Application to manage an always-encrypted address book to protect your privacy and keep your contacts really private.

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This AppleScript converts all emails in the Address Book to lowercase.

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YABI is a simple application that keep iCal updated with your AddressBook dates.

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UC-One is a simple unified communications application.