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This project was initiated as an educational project ("gnuWINix"). It should be used to understand the startup process of a common PC and its different components. Our current goal ("Renovatio OS") is to use this kernel for own hardware components.
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JSPowerLin - Linux with a Java edge, a lightweight platform for developing and deploying J2EE applications and Java Server Pages on a server or servercluster.
The kernel janitor project maintains a list of problem areas in the Linux kernel along with suggested ways of cleaning/fixing them. Please see http://www.kerneljanitors.org/ for current information.
SD is a new operating system developed in the Pascal language (FreePascal, FPC/FPK) and NASM for IA-32. It's main purpose is to provide a fast and simple 32-bit multitasking OS. The OS must have several DOS, Windows and Linux features and maybe Win32 emu.
Mithrill is an exprerimental microkerenl based operating system. Out initial interest will be in the research of persistant and distributed systems, and security techniques on top of a microkernel.
GenesisAE defines and implements an application environment for portable, network-transparent and secure applications. GenesisAE is based on a QNX-like (S/R/R) microkernel and on basic servers (providing device I/O, a database, ...)
Ingenix is a novel approach to distributed computing and is an exiting attempt to alter the Operating Systems landscape that hasn't really changed much in over 30 years. It is based on an exokernel architecture and written from scratch.
Seed is probably best thought of as an single-address-space, linear-object-based, native, persistent operating system with event-based pre-emptive-multitasking, but without anything resembling a traditional kernel or filesystem.
JimpOS - Java Implemented Operating System
The main purpose of the JimpOS project is realisation of multitasking, platform independent operating system written in Java language.
Horizon is a research project aimed at developing a 32-bit Operating System for the Intel architecture. It's written in C and assembler (GAS syntax) and one of its main characteristics is full network integration.
MenuetOS is a fully 32 bit assembly written graphical operating system. Menuet supports 32 bit x86 assembly programming as a faster and smaller system footprint.
Menuet has no unix roots and the basic system is meant to be a clean asm based structure.
Hadie - Hardware Abstracting Device Independent Environment. Or just another micro kernel for embedded devices.
Supported architecture are i8051 (80515c), i166 (XC161CJ), Tricore (TC1775B), m68k (m68332) and i386.
A simple operating system made for educational purposes. It will be a 32 bit multitasking open source operating system. Latest release covers interrupt handling, device drivers and shell service.
The Fecundity Project has the purpose of creating a streamlined AMD64 based Operating System. We will hopefully create a stable and secure operating environment, and to investigate orthogonal persistence.
kissme is a free (GPLed) Java Virtual Machine. It is being developed on GNU/Linux and can run console java applications. kissme is to be used with the GNU Classpath java class library. kissme also provides support for orthogonally persistent java.