• Business, Small Business
• ATR file reader
• June 22, 2026

An ATR file is most commonly an Atari ATR Disk Image, which is a digital copy of a floppy disk used by old Atari 8-bit computers, such as the Atari 400, Atari 800, Atari XL, and Atari XE series. It is not usually a single document, image, or video file. Instead, it works more like a complete virtual floppy disk …