An operating system based on the best Windows NT design principles
Free operating system for Atari computers, and more.
Software development for 4Mb portable, using Z80 CPU and AA batteries
Building and running ancient Linux on Windows
Alternative operating system for x86 computers
16 bit real mod minecraft clone running in bios
A single-user single-task ROM-based OS for my 8-bit homebrew computer
A cute and educational x86 OS
AO RTOS is small real time OS based on Active Object concurrency model
A microkernel-based multiserver operating system written from scratch.
C-BIOS is an open source BIOS for MSX computers.
OS-9/6809 compatible operating system for Tandy CoCo and Dragon
an MS-DOS compatible OS, written in Pascal and i8086 assembly
Indipendent distro uses inary package system. Sulin is roolling donkey
Tiny Kernel is a work in progress Operating System kernel.
amforth is an extendible interpreter on microcontrollers
An little operating system
OS bootable from Linux,Windows and others partitions as auxiliary OS
UNIX/LINUX and legal homebrew software on the xbox360 gaming console