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
A tapas/topaz/sapphire kernel optimized for smoothness and low-memory
Building and running ancient Linux on Windows
amforth is an extendible interpreter on microcontrollers
Alternative operating system for x86 computers
An ADL-mode rewrite of the ez80 CP/M 3.1 port
16 bit real mod minecraft clone running in bios
AO RTOS is small real time OS based on Active Object concurrency model
A single-user single-task ROM-based OS for my 8-bit homebrew computer
A cute and educational x86 OS
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.