The Trion Object Oriented Operating system is an OS that is designed to meet the needs for the 21st century, with a kernel written in C++ and modelled in UML, and lots of features. The project is run by a team of OSDev.org community members.
Gebix is a FreeBSD-based operating system that will be available for both x86 and ARM as of version 0.7 Release Candidate 1. It will sacrifice most of the legacy support to transition to new or recent alternatives.
Our project focuses the development of an operating system with a most simple implementation and structure. The goal is to provide a good starting point for beginners along with accompanying documents.
RedBrick project tries to bring the best commonly available open source software pieces like linux 2.6, lustre, sleepycat, mysql, tipc,openais and others available in the above paradigms together as a integrated single downloadable cluster image. T
XSystem Kernel Project - an object-oriented 32-bit protected-mode operating system for IA32-architecture.
open source analogue of IBM OS/2 operating system