What is an ADF file?
The .ADF file extension has several different technical uses. The most common format is the Amiga Disk File, which stores an exact digital copy of a physical floppy disk used by classic Commodore Amiga computers.
Another major use is the ESRI ArcInfo Binary Grid, which stores raster geographic mapping data. It is also used as an ACT! Data File by The Sage Group for customer relationship management databases. Other software like BOC Group ADONIS uses .ADF files for business process models, and some games use it for audio data.
How to open ADF files?
Because .ADF files can be disk images, GIS maps, or databases, you need the right software for your specific file type. You can use WinUAE or Amiga Forever for Amiga disk images. Use ArcGIS or QGIS for ESRI map data, or Act! software for an ACT! Data File.
Inspecting ADF files online
Since the .ADF extension has multiple possible meanings, we recommend using viewer.online/adf to identify the actual format of your file. viewer.online/adf can analyze .ADF files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available.
Converting ADF files
If you need a different format, we recommend file conversion to sensible target formats on convert.guru. For example, you can extract Amiga files to standard archives, or convert ESRI grids to .SHP or .TIFF images.
Summary
viewer.online/adf is useful for identifying, inspecting, and understanding .ADF files without installing software or dealing with compatibility problems.