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FujiNet Go

FujiNet Go Desktop

IBM PC and compatibles

An IBM PC, PCjr or 486 with FujiNet on a serial port, booting FreeDOS.

FujiNet Go MS-DOS v0.6.2 Released November 4, 2026 IBM, 1981

Download and install Source code

Screenshots

GNOME

FujiNet's CONFIG on an IBM PC/XT, browsing hosts and drive slots
The debugger: 8088 disassembly
Preferences: machine, processor and memory

KDE

FujiNet's CONFIG on an IBM PC/XT, browsing hosts and drive slots
The debugger: 8088 disassembly
Preferences: machine, processor, memory and speed

Windows

FujiNet's CONFIG on an IBM PC/XT, on Windows
The debugger: 8088 disassembly
Preferences: machine, processor and memory

Features

  • Machines: IBM 5150, 5160 XT and PCjr, plus 286, 386, 486 and Pentium
  • Video: MDA, CGA, EGA, VGA and Trident 8900. Sound: AdLib, Sound Blaster family, Gravis Ultrasound and MT-32
  • Floppies from 360K to 2.88M, and hard disks as raw images or VHD
  • FujiNet on COM1–COM4 (COM2 by default), with a built-in FreeDOS 1.3 boot floppy that loads FUJINET.SYS
  • On-screen keyboard and joystick in the Controllers panel; hot-plugged gamepads
  • Debugger: CPU, memory, disassembly; breakpoints on code, memory, I/O and interrupts; DOS call and serial traces
  • Built-in help, FujiNet web UI, and Import to SD Card…

BIOS ROMs

Required

The PC BIOS and video ROMs come from the 86Box ROM set. None are bundled.

FileWhat it isCRC32Needed
machines/ibmpc82/BIOS_5150_27OCT82_1501476_U33.BIN IBM 5150 BIOS (one example) Required
video/vga/ibm_vga.bin IBM VGA BIOS (one example) Optional

How to add them: Machine ▸ Import BIOS… takes files, folders or zips and matches them by CRC against the 86Box ROM set v6.0.

Where to get them

Download and install

FujiNet Go MS-DOS 0.6.2, released November 4, 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.msdos.gnome

Windows

Installer Recommended

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

Download fujinet-go-msdos-0.6.2-windows-setup.exe

14.8 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 MS-DOS from the Start menu.

Portable zip

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

Download fujinet-go-msdos-0.6.2-windows.zip

19.7 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-msdos-0.6.2-macos-arm64.zip · 11.6 MB Intel fujinet-go-msdos-0.6.2-macos-x86_64.zip · 12.0 MB
  1. Open the downloaded zip and drag FujiNet Go MS-DOS 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 MS-DOS.app"
Every file in this release, with SHA-256 checksums
FileForSizeSHA-256
online.fujinet.go.msdos.gnome.flatpak Linux · GNOME · Flatpak bundle 9.0 MB 94c23299a946f36bae0954449ef6720ec38760fdd48ce873830f20e9b315eb30
online.fujinet.go.msdos.kde.flatpak Linux · KDE · Flatpak bundle 8.8 MB c86d23bc6f1e783e2f8137ef7fd003f76c3c3d5c78a352b519b2cc23178304d2
fujinet-go-msdos-gnome-0.6.2-Linux.deb Linux · GNOME · .deb 10.9 MB f5b7445896c7c092f3c6eb347de4e27de481ecab1ce1d9032731c42cf4de594e
fujinet-go-msdos-kde-0.6.2-Linux.deb Linux · KDE · .deb 11.0 MB 9d5a3379a7a36befc7f38e3de1ab540587c8f5f60f1cc6b5e1a5a09cab383cbf
fujinet-go-msdos-gnome-0.6.2-Linux.rpm Linux · GNOME · .rpm 8.7 MB f4dd0ac0a29352a969290a6a34a341629acbd8defb3764be600b41e02a76ab83
fujinet-go-msdos-kde-0.6.2-Linux.rpm Linux · KDE · .rpm 8.8 MB e76cfa4c1e4aa482ed6c210b2daf29e7fce1f13e0bc3ed6cc85d2b2d6f11709c
fujinet-go-msdos-gnome-0.6.2-Linux.tar.gz Linux · GNOME · .tar.gz 10.9 MB a60d07ea8745a42312365c992420ce63ee767b377eaf4e0221615eab4111da78
fujinet-go-msdos-kde-0.6.2-Linux.tar.gz Linux · KDE · .tar.gz 11.0 MB 04174e65f97d03049d322c106497bc1e00c53ecacbcd684a5cf72fbe59251a55
fujinet-go-msdos-0.6.2-windows-setup.exe Windows installer 14.8 MB fa7e226cdc1b0e307829de9272ea6854cec15005720f57697ef25cda7569134a
fujinet-go-msdos-0.6.2-windows.zip Windows portable zip 19.7 MB 0f41554ecc9cc1b23e49a67e120758d602d8cb8d627339dac93b342065c1a96d
fujinet-go-msdos-0.6.2-macos-arm64.zip macOS · Apple silicon 11.6 MB ce1b023abaf5d1d786d16b66002de71c4f99c7e2f6aa058021b30957d004c4e6
fujinet-go-msdos-0.6.2-macos-x86_64.zip macOS · Intel 12.0 MB 5c180518f569632de5121191116843cf2f90c46f374054c1e2d69a94a5a87bbb

Built on

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

  • 86Box GPL-2.0-or-later

    Emulator core (fork github.com/FujiNetWIFI/86Box, feat/fujinet). The 86Box team

  • fujinet-msdos GPL-3.0-or-later

    FUJINET.SYS and tools on the boot floppy. The FujiNet contributors

  • FreeDOS 1.3 GPL-2.0

    The boot floppy's operating system. The FreeDOS project

  • Munt LGPL-2.1-or-later

    MT-32 emulation. The Munt team

  • Zydis MIT

    x86 disassembler in the debugger. zyantific

  • 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