Market leading real time kernel for 40+ microcontroller architectures
Free operating system for Atari computers, and more.
Real-Time Embedded Frameworks based on active objects & state machines
A cute and educational x86 OS
A microkernel-based multiserver operating system written from scratch.
A free Windows-compatible Operating System
Legacy Release only. Get latest Edition here: http://www.openqrm.com.
Free real-time operating system designed for microcontrollers
UNIX/LINUX and legal homebrew software on the xbox360 gaming console
RTOS for Secure, Safe and Real-Time Systems
HackSys Extreme Vulnerable Driver (HEVD) - Windows & Linux
Hanthana Linux Project
Open-source RTOS and Embedded Systems Toolkit for C++ and C
My FreeDOS Floppy Disk Distribution
ext2/3/4 library for microcontrollers
A UNIX-like kernel for the i386 architecture
Run Linux on the Playstation 2
Chromium + Ubuntu = Cub Linux
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
What you see, is what you get! GNU/Linux Arch Based Distro
A Linux Proaudio FrameWork with improved Wine/kernel(rt) support
A custom fork of the Linux kernel.