Run Linux on Windows or other OSes, natively.
Fenix/Free/Fast VDI
LinuxTLE (Revival)
Development moved to https://sourceforge.net/projects/ntfs-3g/
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
This will be an operating system
Small real time operating system for AVR and ARM microcontrollers
An indie, hobby operating system
UEFI GTP fdisk is a disk partitionning tool running under UEFI/BIOS
CMAKE build enviroment for LPC2000 and LPC17xx Cortex MCUs
Kestrel is an experimental kernel runs on i386
Embedded Operating System
A Simple 'IDE'A for Linux Kernel Developers
Embedded Real-Time Operating System (RTOS)
a very fast full system simulator
Custom firmware and IDE for the VEX Cortex Microcontroller
Simple, Fast, Advanced... ZintoriOS. Made in Wellington, New Zealand
Crosos is a SubLinux Distribution
Project has been move to https://github.com/ciaa/Firmware