.ABCDDB File Extension
Apple Address Book Contact List
Discover the ABCDDB file extension—Its origins, structure, advantages, disadvantages, and conversion methods. Learn to open it across different operating systems.
The File Format Database
Search over 10,000 file extensions and software programs.
Discover the ABCDDB file extension—Its origins, structure, advantages, disadvantages, and conversion methods. Learn to open it across different operating systems.