.ABD File

The abd file extension is associated with Quicken Address Book, an add-on for Quicken, a personal finance management tool developed by Intuit, Inc, which is available in both Windows and Mac Versions.

As of Quicken 1999, the data have been incorporated into qdf file and thus the product is discontinued and no longer supported.

How to open:

Use Quicken to work with *.abd add-on files.

How to convert:

As far as we know, this .abd file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.