You could give these a try :
[1]Ground Support Equipment Operating System
Quote:
GSEOS is an I&T software system for space instruments and small spacecrafts especially suited for low budget missions. It is designed for rapid test system design and high flexibility for changing telemetry and command requirements. GSEOS can be seemlessly moved from FM/EM development to flight operations. It features the Python programming language as a configuration/scripting tool and can easily be extended to accommodate custom hardware interfaces.
I have no idea how you would get this to work on your computer ??? :confused:
[2]Inferno
Quote:
Inferno is a compact operating system designed for building distributed and networked systems on a wide variety of devices and platforms. With many advanced and unique features, Inferno puts an unrivalled set of tools into your hands.
[3]JNode
Quote:
JNode is a Java New Operating System Design Effort. It is an effort to make a java OS written fully in java. The goal is (1) to get a new Java OS to play with for developers and (2) grow into a new operating system for modern, small systems such as PDA's, Tablets, desktops etc.
-- This one seems interesting. But haven't been able to give it a run since I need another pc .... :(
[4]MenuetOS
Quote:
MenuetOS is a fully 32 bit assembly written graphical operating system, distributed under GPL license. Menuet supports 32 bit x86 assembly programming as a faster and smaller system footprint.
Probably isn't what you are looking for , but you never you might just find them interesting ........