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Atari800MacX

Atari800MacX is a free macOS emulator for Atari 8-bit computers and the Atari 5200.

Place
#14 of 25
Score
5.9
Atari800MacX's website

What Atari800MacX is

Atari800MacX is a free macOS emulator for Atari 8-bit computers and the Atari 5200. It supports the Atari 400/800, 1200XL, XL/XE, XEGS, and Atari 5200 systems, with cartridge and machine support, joystick input, hard-drive emulation, and full-screen or windowed modes. Save states and controller remapping are also listed. The native Cocoa interface includes preferences, menus, file associations, and help, and libSDL is bundled with the application. The emulator requires ROM image files from original Atari systems, which are not included. The latest listed release is version 6.0.1, dated January 22, 2022; that version requires OS X 10.12 or newer. Version 6.0.0 added support for ARM-based M1 Macs. Listed updates include synchronized sound, a graphical debugger, VAPI and PRO images, copy and paste, configuration files, and a hard-drive emulation scheme. The downloads page offers the application and source code for version 6.0.1. The developer says work on the project has become sporadic due to work commitments and invites questions by email, through AtariAge forums, or through instant messaging.

Good

  • Free macOS application
  • Supports several Atari computer systems and Atari 5200
  • Includes save states and controller remapping
  • libSDL is bundled with the application
  • Application and source code are available

Watch out

  • Requires ROM images not included
  • Version 6.0.1 requires OS X 10.12 or newer
  • Changing display depth while running can crash it
  • Media and emulator directories require 7-bit ASCII filenames

Who it suits

Atari800MacX suits Mac users who want to emulate the listed Atari computer and Atari 5200 systems. It requires original Atari ROM images, which are not included, and version 6.0.1 requires OS X 10.12 or newer.

Verdict

Atari800MacX offers broad listed Atari-system support and useful emulation options in a free Mac application. Before using it, account for the ROM requirement, the stated OS requirement, and the listed known limitations.

Plans and prices

From Atari800MacX's own pricing page, checked 7 Oct 2026.

All about pricing
PlanPriceWhat it gives you
Atari800MacXFreeMac OS X app; requires Atari ROM images not included

The facts

Each one read from Atari800MacX's own pages, with the date it was checked.

Where it runs

Apple silicon
Version 6.0.0 added support for ARM-based M1 Macs.checked 7 Oct 2026

What it does

Bundled library
libSDL is included in the application package and does not need to be installed separately.checked 7 Oct 2026
Compatibility
The download page says version 6.0.1 requires OS X 10.12 or newer.checked 7 Oct 2026
Download options
The downloads page offers the application and source code for version 6.0.1.checked 7 Oct 2026
Emulation features
The site lists full-screen and windowed modes, joystick support, cartridge and machine support, and hard-drive emulation.checked 7 Oct 2026
Interface
It adds a native Cocoa interface with preferences, menus, file associations, and help.checked 7 Oct 2026
Known limitation
The known-bugs page says changing display depth while the emulator is running can crash the program.checked 7 Oct 2026
Latest listed release
The latest release listed on the site is version 6.0.1, dated January 22, 2022.checked 7 Oct 2026
Media filename limitation
The known-bugs page says directories used for media and emulator files must not have filenames containing non-7-bit ASCII characters.checked 7 Oct 2026
Purpose
Atari800MacX is a Macintosh OS X port of the Atari 800 emulator.checked 7 Oct 2026
Recent features
The listed updates include synchronized sound, a graphical debugger, VAPI and PRO images, copy and paste, configuration files, and a new hard-drive emulation scheme.checked 7 Oct 2026
ROM requirement
The emulator requires ROM image files from original Atari systems, which are not included on the site.checked 7 Oct 2026
Support
The developer invites questions by email or through the AtariAge forums or instant messaging system.checked 7 Oct 2026

The company

Maker and development
The maker says work on Atari800MacX has become sporadic due to work commitments and directs donations to the Internet Archive.checked 7 Oct 2026

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