From Grady Bradley:
TheSeekster is an easily-learned yet powerful application to handle all your address-book needs. It offers a depth and breadth of features that power users will really appreciate. Context-sensitive help blankets the application and provides a quick-start tutorial. Runs just fine on removable drives. Encrypted database. Print labels, envelopes and listings. Limited bulk emailing. Import, export and print photos. Kid's information. Birthdays. Can copy itself to a removable drive and then, later, synchronize changes. Multi-user, multi-level security. An address book on steroids.