Abee for Mac

From Silly Bit:

Address Book Importer is a utility to import contacts into Apple's Address Book application on Mac OS X. It works with CSV or tab-delimited files, and gives you complete control over how the import is done. In no time, your hundreds of contacts are stowed away in the Mac OS X central address book, where they can be used by any application. And if you need to perform an import on a periodic basis, your import mapping can be saved for future uses. Free for single use.

• Allows to import contacts from CSV files.
• Support for unlimited number of fields.
• New Implemented notification of updates, at launch or manually.
• New Support for partial imports.
• New Ability to save and reuse import mappings.
• New Support for different file encodings.
• New Support for drag and drop.