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Atari800

Free#1 of 25 in Atari EmulatorsMulti-System Emulators

Atari800: A broad, free Atari emulator with cycle-exact hardware support and flexible media handling. Ranked #1 of 25 in Atari Emulators by our editors (9.4/10); pricing: Free plan; best for broad Atari computer and 5200 emulation.

9.4/10Editor score
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At a glance

  • Editor score
    9.4 / 10
  • Pricing
    Free plan
  • Best for
    Broad Atari computer and 5200 emulation
  • Free plan
    Yes
  • Paid from
    Free
  • Atari systems
    Atari 400, 800, 1200XL, 600XL, 800XL, 65XE, 130XE, 800XE, XE Game System, 5200 SuperSystem
  • Founded
    1995
  • Facts checked
    21 Sep 2026
Atari800 screenshot

  • Where it wins

    • Emulates Atari 400/800-family systems and the 5200
    • Supports disk, cartridge and cassette images
    • Save states, controller remapping and four platform builds

  • Where it doesn't

    • Required ROM files must be obtained separately
    • No official netplay feature
    • Broad configuration may require emulator knowledge

Our verdict on Atari800

Atari800 is a free, open-source emulator for Atari 8-bit computers and the Atari 5200 console. Its supported systems include the Atari 400, 800, 1200XL, 600XL, 800XL, 65XE, 130XE, 800XE, XE Game System and 5200 SuperSystem. Builds are available for Linux, Windows, macOS and Android, making it suitable for users who want one project covering Atari computer and console emulation across desktop and mobile platforms.

The main strength is breadth paired with low-level emulation detail. Atari800 provides cycle-exact emulation of the 6502, ANTIC, GTIA and POKEY components, while supporting disk, cartridge and cassette images. It can configure up to eight emulated disk drives and offers configurable memory expansions. Saved emulator state files, quick save/load state, screen snapshots and WAV audio output add practical options for preserving and reviewing sessions. Controller support covers joysticks, paddles, mice and other devices, with SDL2 configuration and per-button remapping for more control over input.

The trade-off is that setup includes platform and software dependencies rather than a fully self-contained experience. BIOS support is required, and the emulator’s required ROM files are not distributed with it because of licensing and copyright restrictions. That makes Atari800 a strong fit for technically comfortable users who already understand Atari software images, system ROMs and emulator configuration. Users seeking a simpler, more guided setup or built-in online play should consider an alternative focused on onboarding or netplay instead.

Your product? Our editors can test Atari800 in depth and publish a review, labelled as paid · from $149/mo →

Atari800 pricing

Plans Free planFree Free to use — no paid tier required for the core job.
See plans on atari800.github.io

Atari800 fact sheet

Free planYes
Paid fromFree
Atari systemsAtari 400, 800, 1200XL, 600XL, 800XL, 65XE, 130XE, 800XE, XE Game System, 5200 SuperSystem
Supported platformsLinux, Windows, macOS, Android
Save statesYes
NetplayNot verified
Controller remappingYes
BIOS requiredYes
DeploymentDesktop, Mobile
PlatformsWindows, macOS, Linux, Android
SupportCommunity, Docs
Built forSolo, Small business (editorial estimate)
PricingFree plan
Websiteatari800.github.io
Facts checked21 Sep 2026

Alternatives to Atari800

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Atari800 vs the competition

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Also Ranked In

Atari800 is ranked in 2 of our directories.

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Featured on iTechGuides

Featured on iTechGuides — Atari800 9.4/10

Atari800 is listed in our Atari Emulators directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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