.ABA File Extension

Address book archive file created by Palm mobile devices; contains contacts entries with name, organization, email address, phone number, title, and photos; use to backup and synchronize personal and professional contacts between computers and mobile devices.

Add-on file used by Avant, a Web browser program that is built on top of Microsoft Internet Explorer; contains packaged add-on content; used to extend Avant Browser with new tools, capabilities, and look and feel options.

ABA add-on files can be installed through the following menu option in Avant Browser: Tools → Avant Browser Options → Add-ons. They may also be installed by referencing a file using the "aba://" protocol.