.AAUI File Extension

User interface component, referred to as a "Tool Set," used by Adobe Acrobat, a program used for creating and editing PDFs; acts like a plugin and may store a custom panel or other interface component; used by Acrobat users for distributing and installing custom third-party Tool Sets.

Tool Sets can be downloaded and shared on the Acrobat Tool Set Exchange page at AcrobatUsers.com, a website maintained by Adobe.

NOTE: The AAUI format was introduced with Adobe Acrobat XI Pro.