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Ghost is a hobby operating system for the Intel x86 platform. The OS is written from scratch in C/C++ and Assembly. The kernel is not based on any existing kernel, but is partially compatible to Unix.

This is the main development repository.

Update 2020/10/08: With the recent backmerge I've fixed a lot of bugs in the kernel and rewrote a lot of the user-space code. Still work-in-progress, working towards a version 1.0.0.

Project website:


See the documentation folder. It contains information about the technical design as well as building instructions.

A usually up-to-date version of the documentation is provided here:


  • Currently x86-based
  • Micro-kernel
  • Multiboot-compliant
  • Multi-processor (SMP) & multi-tasking support
  • IPC; pipes, messages, shared memory
  • libghostapi, kernel API library
  • Home-made libc
  • ELF binary & shared library support
  • OS specific GCC toolchain
  • C++ support
  • Window server (GUI with home-made toolkit)
  • VESA/VBE video driver
  • PS/2 keyboard & mouse driver
  • Serial COM1 kernel logging
  • VM86 mode for BIOS calls

Screenshot of 0.12.0

Ported software

  • musl (provides libm part of Ghost libc)
  • cairo
  • freetype
  • libpng
  • pixman
  • zlib
  • nasm
  • bash (in progress)


If you want to get in contact, contribute to the project or have any questions, feel free to contact me at:

-Max Schlüssel


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