What is an AOI file?
The .AOI file extension is shared by several different software applications. Its most common use is as a synchronization command file for the Act! CRM software. These files use the standard XML format to manage data synchronization between different databases. Alternatively, an .AOI file can be an ERDAS Area of Interest file used in GIS applications like ERDAS IMAGINE or ArcGIS. It is also known as the Art of Illusion 3D Scene format developed by Peter Eastman for the Art of Illusion 3D modeling software, or a Dynamics AX Application Object Index file by Microsoft.
How to open AOI files?
Because an .AOI file can belong to different software categories, opening it depends on its origin. If your file is an Act! synchronization file, you can read the XML text using basic text editors like Notepad++. If it is GIS data, you need mapping software like ArcGIS. If it is a 3D model, you must use the Art of Illusion software to render the scene.
Best practices and troubleshooting
If you have an .AOI file but do not know which program created it, do not guess the format. viewer.online/aoi analyzes .AOI files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. This prevents errors from opening a GIS file in a 3D modeling program, for example.
Software and tools
To work with these files natively, you might need Act! for CRM data, ERDAS IMAGINE for mapping, or Art of Illusion for 3D scenes. For quick inspection of the internal structure, command-line tools or basic code editors are useful if the file is plain text.
Summary
Because many .AOI files use the known XML format, viewer.online/aoi can safely open and display them online, eliminating compatibility problems.