Universal server
AO RTOS is small real time OS based on Active Object concurrency model
Building and running ancient Linux on Windows
Operating System Guide Dari 0
NES/Famicom emulator based on FCE Ultra.
A bleeding-edge, security-centric Arch-based Linux distribution.
Alternative operating system for x86 computers
A cute and educational x86 OS
OS-9/6809 compatible operating system for Tandy CoCo and Dragon
an MS-DOS compatible OS, written in Pascal and i8086 assembly
An open source filesystem library
Simplest kernel for cooperative multithreading
OS bootable from Linux,Windows and others partitions as auxiliary OS
RTOS for Secure, Safe and Real-Time Systems
Real time preemptive embedded multi-thread kernel
Ubuntu-based Linux Gaming OS
Real-Time Embedded Operating System
Ping-Pong-like game in Assembly that works without OS
Helps you to Boot your Experimental Assembly Language programs