nifanfa/MOOS

C# x64 operating system programming with the .NET native ahead-of-time compilation technology.

1,094

1,339 commits

updated Aug 27, 2026

github.com/nifanfa/MOOS/wiki

See the code

README

Deprecated

This is an experimental toy project with unstable APIs and features. Please migrate to BootTo.NET.

MOOS

MOOS (My Own Operating System Project) is a C# x64 operating system compiler with the .NET 7 Native AOT technology.

Building

For information on compiling MOOS, please read the build wiki page.

Build requirements

VMware Workstation Player - https://www.vmware.com/products/workstation-player.html
Visual studio 2022 - https://visualstudio.microsoft.com/
QEMU - https://www.qemu.org/download or VMWare ( Note - USB Does not work with VMWare and you need x64 if you want to run VMware, 32 bit is not supported )
Windows 10-11 x64 or x86
A CPU from at least 2012 or newer, or in basic terms an Ivy Bridge CPU or over
4GB of RAM but 8GB is recommended

Features

Feature	Working in VM	Working on hardware	Information
Applications .mue (MOOS User Executable)	🟩	🟩
Error Throwing / Catching	🟥	🟥
GC	🟨	⬜	Not safe
Multiprocessor	🟩	🟩
Multithreading	🟩	🟩
EHCI(USB2.0)	🟩	🟩
USB Keyboard	🟨	⬜
USB Mouse	🟩	⬜
USB HUB	🟥	🟥
PS2 Keyboard/Mouse(USB Compatible)	🟩	🟩
Nintendo Family Computer Emulator	🟩	🟩
DOOM(doomgeneric)	🟩	🟩
Intel® Gigabit Ethernet Network	🟩	🟩
Realtek RTL8111E	🟩	🟩
ExFAT	🟩	⬜
I/O APIC	🟩	🟩
Local APIC	🟩	🟩
SATA	🟩	⬜
IDE	🟩	🟩
SMBIOS	🟩	🟩
ACPI	🟩	🟩
IPv4	🟩	🟩
IPv6	🟥	🟥
TCP	🟩	🟩
UDP	🟩	🟩
DNS	🟩	🟩
DHCP	🟩	🟩
Lan	🟩	🟩
Wan	🟩	🟩

Color Key	Meaning
🟩	Yes
🟥	No
🟨	W.I.P / Partially / Buggy
⬜	Unknown

corert

csharp

hobby-os

multithreading

nativeaot

operating-system

smp

Significant stargazers

Andrii Kurdiumov

338 followers · starred Sep 2022

Viktor Hofer

209 followers · starred Sep 2022

Lucas Trzesniewski

116 followers · starred Sep 2022

Michal Strehovský

1,130 followers · starred Sep 2022

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