A book that explore how to write an Operating System from scratch

opuntiaOS - an operating system targeting x86, ARM and RISC-V.

An x86 monolithic kernel and operating system written in modern C++. Comes with in-house graphical applications and command line utilities, plus ports of existing software. And yes, it runs DOOM!

Ghost, a micro-kernel based hobby operating system.

An operating system written in C

A hobby operating system written in Zig & C, a modification of some UNIX ideas.

An OS based on UEFI

A modern x86_64 UNIX-like microkernel-based operating system

An x86_64 hobbyist OS written in C and Assembly

Modern UNIX-like x86_64 operating system and kernel written in C++

A sweet hobby made operating system written in C++ for x86 CPUs with GUI

Almost usable x86-64 Unix-like kernel

shitty operating system ...---...

Tiny Kernel is a work in progress Operating System kernel.

The Flopperating System is a free and open source 32 bit operating system made in C. It is themed around the famous internet Caracal "Big Floppa"

💧 A simple x86-64 kernel written in C

Kernel for my operating system KoraOS

An AArch64 hobbyist OS for the Raspberry Pi 3 B+

Learning operating system and kernel development by building a multithreaded OS called ToyOS

SkylightOS is a small, portable and extensible RTOS