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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 "Theoretically Secure Operating System", focused on information protection, that is provably secure provided that a specific part of the kernel would be free of bugs.
In particular, bugs in application can't be exploited to attack the system.
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.
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.
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.
LusitanOS is a 100% Portuguese effort to build an Operating System based on our own concepts but supporting some things from existing platforms such as POSIX, libc, win32 API, linux/elf and win32/pe.
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A Unix-like (Not compleatly Unix-compatible) Kernel. Right now, we have (very limited support) of 80486+ IBM-PC AT compatibles. Written in C, and assembly. No network support planned for the forseeable future.
This project is now dead. It has been replaced by a Wiki located here: http://www.linspireguide.com. If you're interested in getting involved please stop by and sign up.
Urinel is a dynamic kernel-less operating system designed for maximum code reuse. This improves the efficiency and stability of the code and reduces the size of applications allowing a wide range of functionality to applications.
LainOS is an OpenSource project that seeks to revolutionize the the user experience by bridging the realm between \"Alien Elegance\" and Human Usability, and thus create a truly new and unique interface that is user savvy and beautiful.
AcOS is an acronym for Assembly Constructed Operating System.
As the name suggests AcOS is written in the assembly programming language and written for the Intel i386+ and compatible range of processors.
Still in early development
Minerva's primary goal is security. To allow all users to feel safe and secure but have the freedom to do what ever they want. We also want a fast easy way to bring every linux and windows o/s together.
WISDOM is a 32-bit operating system with a primitive shell implemented. It is copyrighted under GNU/GPL license. WISDOM is also a research into the field of design of operating system. Operating System Development has been in the shadow in recent times.
An ambitious project being undertaken by the teens of the UK, accepting new members, to create a stable yet powerful OS targeted at webhosting. And our main aim is to keep it simple for the newbies out there. ;)
This project will provide updated Slackware package management tools adding extra functionality such as dependency/conflict check and priority, though not losing any compatibility.
Committed to the development of fundamental ACPI (Advanced Configuration and Power Interface) components for Linux. This includes a generic ACPI table parser, AML interpreter, bus and device drivers, policy, user interface, and support tools.
Fast, multi-threaded OS for PCs and 386+ based embedded systems. Runs many DOS, DPMI and Win32 console programs. 100% assembly with segment protection.