A Tiny Linux-Compatible Kernel

An RSA🔐 implementation in C, using arbitrarily large integers

UPX - the Ultimate Packer for eXecutables

UNSCII, a Unicode bitmap font family inspired by classic computer systems.

Bare metal Raspberry Pi 3 tutorials

Tutorial: Writing a "bare metal" operating system for Raspberry Pi 4

My hobby OS kernel

Portable asynchronous microkernel implementing multiprocessor priority scheduling and Unix-like abstractions

Legacy mirror of Darwin Kernel. Replaced by https://github.com/apple-oss-distributions/xnu

Bootable PC demo/game kernel

Source codes for the "Write your own Operating System" video-series on YouTube

SDK for building cross-platform desktop apps in ANSI-C

An x86_64 OS kernel from scratch.

xv6 OS

Linux kernel source tree

A tiny but powerful VGA text mode font editor for DOS

A x86 32bit Hobby Operatingsystem with graphics, multitasking, networking and 32bit C-Compiler for i386 architecture.

The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes

A WIP custom built OS

Operating System Coded in Assembly and C

How to Make a Computer Operating System in C++

Lunaris 2: The successor to Lunaris

💾 Amd64 operating system in C. Trying to make a full OS, with a simple and readable codebase!

An operating system, but it only plays Tetris.

A list of operating systems and stuff

A Simple operating system meant for educational purposes.

A simple template for building a Limine-compliant kernel in C.