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FujiNet Go

FujiNet Go Desktop

Atari 2600

Stella's Atari 2600, with a FujiNet cartridge in the slot.

FujiNet Go Atari 2600 v0.5.0 Released November 2, 2026 Atari, 1977

Download and install Source code

Screenshots

GNOME

The FujiNet CONFIG client browsing network hosts from the console
Stella's debugger, disassembling the CONFIG cartridge
Both keypad controllers and the console switches

KDE

The FujiNet CONFIG client browsing network hosts from the console
Stella's debugger, disassembling the CONFIG cartridge
Both keypad controllers and the console switches

Windows

The FujiNet CONFIG client on Windows
Stella's debugger, disassembling the CONFIG cartridge
Both keypad controllers and the console switches

Features

  • Stella in full, with every bank-switching scheme and Stella's complete debugger
  • Per-port controllers: joystick, paddles, driving controller and keypad
  • Floating keypad window with the console switches; Escape reboots to CONFIG
  • Cartridges .a26, .bin, .rom and .fuji; Import Cartridge to SD…
  • FujiNet web UI in your browser, or switch to an external FujiNet

BIOS ROMs

Nothing to download

The 2600 has no BIOS. Nothing to download.

Download and install

FujiNet Go Atari 2600 0.5.0, released November 2, 2026. Release notes

Linux

Desktop
Package

Install with Flatpak (any distribution)

  1. Install Flatpak with your distribution's package manager if you don't have it yet.
  2. Add Flathub, which supplies the runtime, and the FujiNet Go repository: 
    flatpak remote-add --user --if-not-exists flathub \
    https://dl.flathub.org/repo/flathub.flatpakrepo
flatpak remote-add --user --if-not-exists fujinet-go \
    https://fujinetwifi.github.io/fujinet-go-desktop-flatpaks/fujinet-go.flatpakrepo
  3. Install the GNOME edition (or swap gnome for kde): 
    flatpak install --user fujinet-go online.fujinet.go.atari2600.gnome

Windows

Installer Recommended

Windows 10 or 11, 64-bit. Installs for your user only and needs no administrator rights.

Download fujinet-go-atari2600-0.5.0-windows-setup.exe

9.0 MB

  1. Run the downloaded file.
  2. If Windows SmartScreen says it protected your PC, choose More info, then Run anyway. The app isn't code-signed yet.
  3. Start FujiNet Go Atari 2600 from the Start menu.

Portable zip

Nothing to install. Good for a USB stick or a locked-down PC.

Download fujinet-go-atari2600-0.5.0-windows.zip

11.9 MB

  1. Right-click the zip, choose Extract All…, and pick a folder.
  2. Open the folder and run the .exe inside.

macOS

macOS app

macOS 13.3 or later. Pick the build for your Mac's chip.

Apple silicon fujinet-go-atari2600-0.5.0-macos-arm64.zip · 8.1 MB Intel fujinet-go-atari2600-0.5.0-macos-x86_64.zip · 8.2 MB
  1. Open the downloaded zip and drag FujiNet Go Atari 2600 into Applications.
  2. The first time, Control-click the app and choose Open, then Open again. (On macOS 15 and later: try to open it, then go to System Settings ▸ Privacy & Security and choose Open Anyway.)
  3. Or clear the download quarantine in Terminal: 
    xattr -dr com.apple.quarantine "/Applications/FujiNet Go Atari 2600.app"
Every file in this release, with SHA-256 checksums
FileForSizeSHA-256
online.fujinet.go.atari2600.gnome.flatpak Linux · GNOME · Flatpak bundle 7.2 MB c6510b8789c138b2b3f61df80019919a1b62434c7cf23cd949620e4330e426e5
online.fujinet.go.atari2600.kde.flatpak Linux · KDE · Flatpak bundle 7.0 MB 77f9023464f3cee09f811fb56ae6db7e9d0e1006556bd6d4a10074959532cc7a
fujinet-go-atari2600-gnome-0.5.0-Linux.deb Linux · GNOME · .deb 8.3 MB 3ac0d32a2c7c47a458a9336dbfe089a422ece7fd6bc0203a157347d4a0462edd
fujinet-go-atari2600-kde-0.5.0-Linux.deb Linux · KDE · .deb 8.3 MB 16c832e6cba0f4ab9220fab169873e571d0a30a278f691ee2ac78c76af36d4b8
fujinet-go-atari2600-gnome-0.5.0-Linux.rpm Linux · GNOME · .rpm 6.7 MB c047811e0dcca0583efe0ada58bd0ff77d3e972e0fd26967493e875ff6ce628c
fujinet-go-atari2600-kde-0.5.0-Linux.rpm Linux · KDE · .rpm 6.7 MB 686e5fae50eead4a029c4025700c82322bd9168a65a3c3b8442d1c57ce0f8bcb
fujinet-go-atari2600-gnome-0.5.0-Linux.tar.gz Linux · GNOME · .tar.gz 8.3 MB 8e8e69733b80a36783bcda5e4f6a241b893a78cd41cf7f5dab9003cb8aeb98a6
fujinet-go-atari2600-kde-0.5.0-Linux.tar.gz Linux · KDE · .tar.gz 8.3 MB b6a97f6efcca4a1cbdb759a62b4530a549e03b19e198d5ab5e2fc2a65d9dc254
fujinet-go-atari2600-0.5.0-windows-setup.exe Windows installer 9.0 MB 6ecb747c2b4eaf9272b3191638fbb9a974b2a31ee57e607cf6c8701434d63724
fujinet-go-atari2600-0.5.0-windows.zip Windows portable zip 11.9 MB c1fab631cc4c4fe34535d14b5886a0ba2945aeb489a0f66f18aa4fc2e26d3aad
fujinet-go-atari2600-0.5.0-macos-arm64.zip macOS · Apple silicon 8.1 MB f78c9686bca0051d4b44c91624b8bc9e14e8aded4a42d2effe699892bddcfec9
fujinet-go-atari2600-0.5.0-macos-x86_64.zip macOS · Intel 8.2 MB a3cf18ebcd497a55c99335e180d96066adab41bbd12e7b223b1c4cf0be8ddfce

Built on

FujiNet Go Atari 2600 is free software (GPL-3.0). It stands on these projects:

  • Stella GPL-2.0-or-later

    Emulator core (fork github.com/tschak909/stella, add-fujinet-support). Bradford W. Mott, Stephen Anthony and the Stella team

  • nlohmann/json MIT

    JSON, through Stella. Niels Lohmann

  • dr_libs MIT-0 or public domain

    Audio decoding, through Stella. David Reid

  • fujinet-firmware GPL-3.0-or-later

    The FujiNet itself, built into every app. Thomas Cherryhomes and the FujiNet contributors

  • Mbed TLS Apache-2.0

    TLS for FujiNet's network protocols. The Mbed TLS contributors

  • libssh, libsmb2, libnfs LGPL-2.1-or-later

    FujiNet's SSH, SMB and NFS protocols. Their respective authors

  • cJSON, expat MIT

    JSON and XML parsing in FujiNet. Dave Gamble; the Expat maintainers

  • SDL 3 Zlib

    Video, audio and gamepads. Sam Lantinga and the SDL contributors

  • GTK 4 and libadwaita LGPL-2.1-or-later

    The GNOME edition's interface. The GNOME project

  • Qt 6 LGPL-3.0-only

    The KDE edition's interface. The Qt Company and contributors

The full list of bundled code, versions and licences is in COMPLIANCE.md. Source code · All releases · Report a problem