Free operating system for Atari computers, and more.
16 bit real mod minecraft clone running in bios
amforth is an extendible interpreter on microcontrollers
AO RTOS is small real time OS based on Active Object concurrency model
Q1-kernel a hybrid kernel
Alternative operating system for x86 computers
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
Indipendent distro uses inary package system. Sulin is roolling donkey
OS bootable from Linux,Windows and others partitions as auxiliary OS
RTOS for Secure, Safe and Real-Time Systems
Real-Time Embedded Operating System
An operating system written in RTL
A Debug style tool for OS Free systems
Mulithreading Arduno library
An operating system for tenputer
Written in pure ASM and Exode with cloud computing in mind.