opengroup.org: The Open Group: Government Programs
The Open Group is an international vendor and technology-neutral consortium that is committed to delivering greater business efficiency by bringing together buyers and ...
apostle.sourceforge.net: The Apostle Project
Apostle System is a free open source micro-kernel based operating system for i386 architecture.
reactos.org: Frontpage - Reactos Website
ReactOS® is a free, modern operating system based on the design of Windows® XP/2003. Written completely from scratch, it aims to follow the Windows®.
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