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|OSName=DreckigOS
|OSName=DreckigOS
|OSDescription=Dreckig OS is an x86, real mode, multi-tasking(kinda) operating system written in assembly language. It uses a megalithic kernel, an experimental kernel architecture. Dreckig also has a GUI and a custom RAM disk file system. I am also developing a programming language for use with Dreckig OS.
|OSDescription=Dreckig OS is an x86, real mode, multi-tasking(kinda) operating system written in assembly language. It uses a megalithic kernel, an experimental kernel architecture. Dreckig also has a GUI and a custom RAM disk file system. I am also developing a programming language for use with Dreckig OS.
|URL=http://www.code.google.com/p/dreckig-os/
|URL=http://www.code.google.com/p/dreckig-os/ https://github.com/WizardOfHaas
|Status=Alpha - Active Developement
|Status=Alpha - Active Developement
}}
}}

Revision as of 14:58, 21 October 2012

This page maintains a list of academic, personal, and small non-commercial operating systems. For information regarding commercial or main-stream operating systems visit Wikipedia.


The type of operating systems listed here have a high mortality rate. This list was off-line from 09-04-2004 until 06-17-2006 and during that time 112 of 213 operating system projects disappeared from the internet leaving only 101(submitted). Looking at how often these projects are started by using the OS Project Announcement forum we can see that between 11-24-2004 and 6-21-2006 around 68 projects were announced(many of which disappeared before being added here). The current total is 183 projects (as of 10:21, 7th December 2009 (GMT+12)). Please help keep this list current by correcting it yourself if you have a login id or by posting a message on the OSDevWiki forum pointing out the incorrect entry.


Contents: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A


  • A2 - It is an operating system and an integrated software environment developed at ETH in Zürich. It is a single-user, multi-core, multi-tasking system that runs on bare hardware or on top of a host operating system (currently Microsoft Windows or Linux). The developers aim at producing a reliable, real-time operating system suitable for embedded systems and for industrial and in particular medical applications. Earlier, A2 was called “Aos” (Active Object System), a nomenclature that is still in use. It is written in the Active Oberon programming language, which evolved from Oberon, a programming language in the Pascal/Modula tradition. The graphical user interface is referred to as “Bluebottle”.



  • Ace OS - This OS is mainly deal with the hardware specifications. It is coded in C,C++(MingW) and Assembly(NASM). I does not want to compete with Windows or Linux. Simply it is an 32bit multitasking operating system for IA32 developed for experimental and exploration purpose. The next version (Ace 2.0) will capale of handling DLL files also.
    • Contact: Sam(samuelhard AT yahoo.com)
    • License: No License Information
    • URL: http://www.samueldotj.com/Ace/index.asp
    • Status: September 1, 2005 -- applications-shell; kernel-s-2.2
    • Unknown
    • The validity of this entry is questionable;
      Not updated since 2005, possibly unmaintained?


  • Acess2 - Acess2 is a kernel and operating system designed to do what Linux does, be customizable to any given situation. However, unlike Linux, it there is no need to maintain backwards compatibility with anything (yet). It features a simple, but extensible VFS that currently supports VFAT and Ext2, IPv4/IPv6 networking with TCP/UDP, USB input and storage.
    • Contact: thePowersGang
    • License: No License Information
    • URL: http://www.mutabah.net/acess2/
    • Status: January 20, 2012 -- Prototype GUI, ARMv7 (Realview PB)
    • Unknown



  • AdaOS - Project to develop a fully distributed OS written mainly in Ada. Primary aim will be at desktop workstation. Will be secure, object-oriented, with GUI.
    • Contact: Nick Roberts(nickroberts AT blueyonder.co.uk)
    • License: No License Information
    • URL: [Kernel (See Project) Kernel (See Project)]
    • Status: April 7, 2004 -- documentation-kernel-various (no known kernel released publicly)
    • Unknown
    • The validity of this entry is questionable;
      Not updated since 2004, possibly unmaintained?


  • Adelian - A desktop OS based on our RTOS (MDOS). Designed from scratch, this completely modular OS features a GUI, CLI, VFS, sound etc etc.
    • Contact: Gary Partis, info@adelian.co.uk
    • License: No License Information
    • URL: http://www.adelian.co.uk
    • Status: -- Complete nano-kernal plus many completed modules
    • Unknown



  • Agnix - Agnix is a small operating system kernel for i386, supporting 32-bit protected memory mode, paging, hardware switched tasks, memory tests (RW, ECC, address patterns), PCI bus, devices, PCI IRQ routing, RT timers and network protocols. Agnix is available with all the source code and is fully compatible with the Linux Kernel API. Agnix has been written from scratch by Lukas Dembinski.
    • Contact: Lukas Dembinski (dembol)(dembol AT oomkill.net)
    • License: No License Information
    • URL: http://agnix.sourceforge.net
    • Status: January 12, 2007 -- kernel-agnix-0.0.4
    • Unknown
    • The validity of this entry is questionable;
      Not updated since 2005 on sourceforge, possibly unmaintained?


  • Aksel - Aksel is a small operating system kernel for i386 in ASM and C with partly ported newlib still in development. Source for the different stages of the development are available to download. It is a great learning tool.
    • Contact: ivandiprima@gmail.com
    • License: No License Information
    • URL: http://www.3turtles.co.uk
    • Status: November 26, 2010 -- only a few commands implemented and no fs yet.
    • Unknown



  • Alt Ctrl Delet - Polish OS Project
    • Contact: (mrkaktus AT wp.pl)
    • License: No License Information
    • URL: http://www.acd.prv.pl/
    • Status:
    • Unknown
    • The validity of this entry is questionable;
      WARNING! This URL Website is not in English and contains front page ads which you need to click on the image to access this site. This site is under review


  • altOSdev - Just another view on how should OS be designed.
    • Contact: Dozz(tkt_male AT cs.heslinki.fi)
    • License: No License Information
    • URL: http://sourceforge.net/projects/altosdev
    • Status: -- no known kernel released publicly (empty CVS)
    • Unknown
    • The validity of this entry is questionable;
      No releases, possibly abandoned?


  • Amateur OS - A real time, minimum kernel operating system for doing DSP work and amateur radio digital modes.
    • Contact: Scott Billingsley(kb5ryo AT qsl.net)
    • License: No License Information
    • URL: http://scottie.20m.com
    • Status:
    • Unknown
    • The validity of this entry is questionable;
      Not updated since 2001, possibly abandoned?


  • Amiga Research Operating System, - AROS aims to create a free open source AmigaOS like OS and make it better then the original.
    • Contact: Ola Jensen(ola AT aros.org)
    • License: No License Information
    • URL: http://www.aros.org
    • Status:
    • Unknown



  • Anix Operating System, - Anix is a Operating System written mainly in C it currently supports FAT12 and Preemptive multithreading in addition to paging.
    • Contact: Aaron Polley(webmaster AT germsoft.com)
    • License: No License Information
    • URL: http://www.germsoft.com/Software/OS/Index.php
    • Status: February 6, 2009 -- Anix 1.0.2
    • Unknown
    • The validity of this entry is questionable;
      Not updated since 2009, possibly abandoned?



  • AntiTux - AntiTux is a C++ OS aiming to be up to par with Linux. In development.
    • Contact: astei on OSDev.org forums
    • License: No License Information
    • URL: http://antitux.googlecode.com/
    • Status: -- not yet released
    • Unknown
    • The validity of this entry is questionable;
      No releases, possibly abandoned?


  • AOS (Advanced Operating System) - A not big (yet) OS written in C#. Work in progress.

I DON'T WANT TEAM-MEMBERS (yet). Currently in development.

    • Contact: Kelvin Bongers(kelvin.bongers[at]gmail.com)
    • License: No License Information
    • URL: http://aosweb.blogspot.com/
    • Status: -- not yet released
    • Unknown
    • The validity of this entry is questionable;
      No releases and url nonexistent, blog removed. abandoned?


  • Apollo Kernel - x86 Monolithic Kernel in early alpha development
    • Contact: Primis(supportprimis [at] gmail.com)
    • License: No License Information
    • URL: http://primiscomputers.com/apollo.html
    • Status: -- not yet released
    • Unknown
    • The validity of this entry is questionable;
      No releases and webpage is a 404, abandoned?


  • Aprom - Aprom is a weird, modular 32bit OS. Tightly bound design, roughly microkernel. Been in development every now and then over the past decade. A spontaneous fusion of a large algorithms library.



  • Asgard - A small kernel for research into the feasibility of the OSKit and redistributable components in general, written in FreeBASIC, with a port of the Python interpreter. WORK IN PROGRESS. Ideas and contributions welcome.
    • Contact: Rudi MK (rmk.robotika AT gmail.com)
    • License: No License Information
    • URL: http://hackmycode.webs.com/projectasgard
    • Status: -- No releases to date.
    • Unknown
    • The validity of this entry is questionable;
      No releases and webpage is shut down, abandoned?


  • AtlantisOS - Currently in redesign and reimplementation (3rd time's a charm right?) the new version supports the Bochs VBE adapter and IDE devices. It boots only on 64-bit machines.
    • Contact: Candy (dascandy@gmail.com)
    • License: No License Information
    • URL: [<<none>> <<none>>]
    • Status: -- -
    • Unknown



  • Asmadian - A (currently) 32-bit OS (but will later have a 64-bit version) that runs on a custom microkernel. Although it's partly based on UNIX, it is not fully compatible with any standard (won't even use INT80, INT70 will be used instead!). It will be put into a whole OS with a GUI, under the name AsmadianOS
    • Contact: projekt.darma@gmail.com
    • License: No License Information
    • URL: https://sourceforge.net/projects/asmadian/
    • Status: -- -
    • Unknown
    • The validity of this entry is questionable;
      No updates since 2010 on sourceforge, possibly abandoned?


  • Audentia - Audentia is a i586 micro-objective kernel written in C++ that is designed to be very stable, memory efficient, and very fast. It will be like Unix.
    • Contact: lioneltabre@gmail.com
    • License: No License Information
    • URL: No URL
    • Status: -- Active as of December 12, 2011
    • Unknown


  • Aurora - Aurora is a simple learning/research kernel (at the moment), that is slowly but gradually becoming a multitasking modular kernel.
    • Contact: Larry(lbrogan2 AT gmail.com)
    • License: No License Information
    • URL: http://code.google.com/p/auroraos
    • Status: -- Active
    • Unknown
    • The validity of this entry is questionable;
      No updates since 2009 but a lot of code, possibly unmaintained?


  • AWOS (Andrew Wilcox - AWOS is an operating system that will CONQUER THE WORLD! No, but check it out!
    • Contact: Andrew Wilcox(Andreni AT HotPOP.com)
    • License: No License Information
    • URL: http://awos.wilcox-tech.com/
    • Status:
    • Unknown
    • The validity of this entry is questionable;
      No updates since 2010, possibly abandoned?

B


  • BareMetal - BareMetal is a 64-bit OS for x86-64 based computers. The OS is written entirely in Assembly while applications can be written in Assembly or C/C++. The two main purposes of BareMetal are for educational uses in learning low-level OS programming in 64-bit Assembly and to be used as a base for a high-speed data processing node. Source code is well documented and freely available. As of version 0.4.9 BareMetal OS officially supports multiple processors, memory management, and Ethernet communications.



  • BCOS - BCOS is a practical distributed operating system, initially aimed at 80x86/PC compatible computers. In general BCOS is meant to (eventually) make a group of computers connected by a network (a cluster of computers) behave like a single computer with multiple users.
    • Contact: Brendan Trotter (btrotter AT gmail.com)
    • License: No License Information
    • URL: http://bcos.hopto.org/
    • Status: -- active
    • Unknown



  • BDOS - BDOS is a 16 bit educational operating system written in NASM and it is aimed at 80x86 PC.

The goal of this project is to help beginner os developers who would like to develope their os in assembly.It is also among the goals of this project to make a little functional cli operating system to perform basic operations.BDOS is designed to run of a single floppy disk and to provide much functionality in least space.





  • BOS - BOS is a new 32-bit Operating System designed with DOS in mind. That means no protection, no multitasking, no paging, and no to a lot of other things often related with new 32-bit OS:es. But despite it's lack of protection it will still be a modern OS with native support for CD-ROM/BURNER, DVD, USB, most filesystems, up to 4gb of memory etc. This is a OS for all those people that miss the days of DOS programming.
    • Contact: Christoffer Bubach(bubach85 AT hotmail.com)
    • License: No License Information
    • URL: http://bos.asmhackers.net/
    • Status:
    • Unknown



  • BRiX - safe-language/OS hybrid - persistent database filesystem - reconfigurable graphical interface


C


  • CakeOS - CakeOS (Cake) is a 32 bit operating system for x86 designed to be easy to use, with an interface that is both unique and yet instinctive. It is currently under development, with support for tasking, a dynamic heap, a 32bpp vesa/vga driver with mouse support, a basic shell and window manager, and several drivers in development. Cake has many ambitious aims for desktop usage.
    • Contact: Luke Mitchell(lukem_95 [at] hotmail [dot] com)
    • License: No License Information
    • URL: http://code.google.com/p/cakeos
    • Status: -- Under Development
    • Unknown



  • Caldera - Caldera is a 32-bit protected mode OS with: currently partial POSIX emulation,VESA\VGA support,basic multitasking,and dynamic loading of drivers.
    • Contact: KotuxGuy
    • License: No License Information
    • URL: No URL
    • Status: -- Under Development
    • Unknown



  • Capacitor - Capacitor is a x86 kernel based on Geekos. It has basic hardware support, and a simple Newlib port.
    • Contact: shacknetisp
    • License: No License Information
    • URL: No URL
    • Status: -- Under Development
    • Unknown



  • Capital OS - Capital is an Object Oriented Operating System being developed for iPAX386+ processors. It features a multithreading tasking model. The kernel itself is multithreaded and is fully preemptible giving support for Real Time processes. The memory model is a paged virtual memory system. A hardware interface layer is envisaged. It follows a totally Object oriented design with all designing done in UML. It is being written in C++, C and of course, Assembly.



  • CapROS (The Capability-based Reliable Operating System) - CapROS is a new operating system that merges some very old ideas about capabilities with some newer ideas about performance and resource management. The result is a small, secure, real-time operating system that provides orthogonal persistence.



  • Caracal - Caracal started life as a hobby OS which was going to make it as far as a 'hello world' kernel. Since I got the OS Dev bug it has now grown to a multiboot compatible pmode32 OS with multitasking support. Caracal has just undergone a redesign, where the boot loader has been made much more versatile and the kernel now uses a separate arch tree to enable easier porting. Currently, the i586 and x86_64 versions of the kernel are under initial development.
    • Contact: No Contact Information
    • License: No License Information
    • URL: http://www.ajsoft.co.uk/
    • Status: January 30, 2008 -- CBoot is alpha, Caracal Kernel is early pre-alpha.
    • Unknown



  • Cleese - The goal is an operating system written as much as possible in Python with the Python VM as a micro-kernel on top of a minimal C/asm layer.



  • Clicker - Exploring new ways in OS design. Clicker32 is a microkernel-based system for x86 hardware. It's based on modular architecture and already supports preemptive multithreading + user-level processes. Next milestone (0.8.0) should allow loading of user program from another user program.
    • Contact: Pype & the Clicker Development Team(pype_1999.geo AT yahoo.com)
    • License: No License Information
    • URL: http://clicker.sourceforge.net
    • Status:
    • Unknown



  • Cloudium OS - This is being written in pure ASM with cloud computing in mind. Exploring the new exokernel designs and basin design decisions only on speed and cloud.



  • COBOS - COBOS is a, currently closed source, 64-bit microkernel based operating system. It is mainly developed for educational purposes.
    • Contact: os64dev (retainsoft AT gmail.com)
    • License: No License Information
    • URL: http://88.159.208.109
    • Status:
    • Unknown



  • Coremark - A minimalist kernel providing test environment for hardware performance analysis & testing
    • Contact: Hüseyin Uslu(shalafiraistlin @NOSPAM@ gmail dot com)
    • License: No License Information
    • URL: http://coremark.sf.net
    • Status: Invalid month: 0 0, No public release yet -- No public release yet
    • Unknown



  • C-OS - A 16 bit real mode kernel that's based on DOS.
    • Contact: walking_zombie_35@hotmail.com
    • License: No License Information
    • URL: [none none]
    • Status: -- Sill working on it.
    • Unknown



  • cos2000 - Un OS en fran?ais enti?rment en ASM. Le site traite aussi de la prog des OS.





  • Crocos - Crocos is a small opensource UNIX-like kernel for x86/x86_64 systems (written in C), designed with simplicity in mind, for educational purposes. It is developed in several steps to allow people to understand how a tiny operating system can be built from scratch. The main idea used in early development phases is to run a multiprocesses environment inside one Linux process. This way, it is possible to implement a maximum of features with the comfort of Linux for debugging and tests.
    • Contact: Guillaume Duranceau (g_duranceau A.T users D.O.T sourceforge D.O.T net)
    • License: No License Information
    • URL: http://crocos.sourceforge.net/
    • Status: -- Crocos is currently a multitasks system embedded inside one Linux process. It supports read operations on an ext2 file system.
    • Unknown



D


  • Derrick Operating System - A monolithic 32-bit operating system kernel designed for stability and speed. Derrick is running in protected mode. It's coded in x86 assembly and it's aimed as a single-tasking hybrid monolithic OS.





  • DEX Extensible operating system (dex-os) - dex-os is an educational operating system that supports a plug-in like architecture and aims to achieve zero static inter-module calls.



  • DexOS - DexOS is a 32bit, asm OS, based on the idea, that it would be cool to have a OS based on a console type OS, but instead of running on a xbox or DS, it would run on a x86. From the start, as you would expect from a OS based on a game's console OS, optimizing for speed has been of paramount important in the over all design. To this end there's no virtual memory, paging, and only a single process is allowed (though that process can spawn multiple threads). The program runs in ring0, you have direct access to all hardware (including CPU and graphics). Memory allocation is the responsibility of the app--there's no front-end memory allocation. The entire OS will fit into less than 100k.
    • Contact: Team Dex4u ( justdex4u@aol.com)
    • License: No License Information
    • URL: http://www.dex4u.com
    • Status:
    • Unknown



  • DreamOs - Home-made operating system, developed in C and asm for x86 architectures.



  • DreckigOS - Dreckig OS is an x86, real mode, multi-tasking(kinda) operating system written in assembly language. It uses a megalithic kernel, an experimental kernel architecture. Dreckig also has a GUI and a custom RAM disk file system. I am also developing a programming language for use with Dreckig OS.



  • Dux - Dux (started in 2008) is a constantly changing Operating System currently running on i386, using the metodo kernel. It is designed to be clean and easy to work with (for developers and users alike), and easy to debug with it's interactive kernel debugger ("colpa"). Access will be divided amongst 4 levels - Kernel Access (full access), Kernel Drivers (ie, graphics drivers), User Drivers (userland, but more syscalls), User Access (untrusted).



  • Dynacube Operating System - A Full fledged open source, x86 based, 32bit Protected mode, multitasking operating system. Check it out.



  • DynatOS - An OS that takes a different and more simplistic approach to abstracting the fundamentals of a computer system. Initially targeting the x86 32-bit processor series, DynatOS now focuses on the x86-64 architecture. The kernel is developed in assembly language using NASM.
    • Contact: Keith Kanios(spook AT dynatos.org)
    • License: No License Information
    • URL: http://www.dynatos.org/
    • Status: -- Pre-Alpha Development. 64-bit Long Mode. Memory and Process Management. Paging. Software Task Switching. Basic Resource Management. Basic ABI.
    • Unknown


E


  • EFOS (Efficient and Secure Operating System Project) - This project is an effort to create an Operating System essentially impervious to security attacks. This is an extrodinary undertaking, requiring multiple levels of effort. The concentration will be on securing the operating system from the ground up, and providing an impenetratable barrier against user mode applications attempting to maliciously alter the system or OS.
    • Contact: No Contact Information
    • License: No License Information
    • URL: No URL
    • Status: -- Alpha
    • Unknown



  • EROS (Extremely Reliable Operating System) - EROS merges some very old ideas in operating systems with some newer ideas about performance and resource management. The result is a small, secure, real-time operating system that provides orthogonal persistence. - Development had stopped in favour of CapROS.



  • EmbOS (Embedded Operating System) - EmbOS aims to provide a basic operating system (task manager, basic drivers, memory management and file system support to allow quick easy development of embedded systems in a high level language by allowing the developer to focus on the software portion of the system.
    • Contact: John (havok1984 AT gmail DOT com)
    • License: No License Information
    • URL: http://embos.wikispot.org
    • Status: -- Early Development.
    • Unknown



  • Escape - Escape is a 32-Bit microkernel operating system for X86 that supports multitasking and multithreading. It's implemented in ANSI C, C++ and a bit assembler and most parts of it are UNIX-like. The goal is to experiment with it and learn as much as possible about operating systems, hardware and so on.



  • EX - EX (previously known as KOS) is a x86 architecture 32-bit protected mode computer operating system. It is developed since 2004 (with pauses in development) as a hobby. The website is run on a home PC, so expect it to be down for some time each day.


F


  • FDOS - FDOS uses only 30K code, but contains every important part and exceeds the well known M$DOS in every detail. It does not only work in protected mode, but contains two drivers for floppy and harddisks written from scratch too. A filesystem special for those media is added, which is not only very extentable, but installed in one second.
    • Contact: Frizzz(asmos AT rcfriz.de)
    • License: No License Information
    • URL: http://www.rcfriz.de/
    • Status:
    • Unknown



  • Festival - The multimedia operating system.
    • Contact: No Contact Information
    • License: No License Information
    • URL: http://festival.sf.net/
    • Status: November 23, 2007 -- An alpha build is available
    • Unknown



  • FireOS - A 32-Bit and 64-Bit operating system.
    • Contact: Hakon Magnus (hakon-magnus99@hotmail.com)
    • License: No License Information
    • URL: http://fireos.net84.net
    • Status: -- 12633 lines of code!
    • Unknown



  • FlachsOS - FlachsOS is a 32-Bit Realtime Operating System.
    • Contact: Daniel Wei?ler (Xardas) and Michael Wangler (Wacky)(michael.wangler AT web.de)
    • License: No License Information
    • URL: http://www.flachsos.de.vu
    • Status:
    • Unknown



  • Flick - Flick is supposed to be a simple but powerful and clean 32-bit Unix.
    • Contact: Alexander Blessing(Alexander Blessing AT epost.de)
    • License: No License Information
    • URL: http://flick.sourceforge.net
    • Status:
    • Unknown



  • Fluidium - Fluidium is a x86 hobby operating system designed to create a user-friendly, text-oriented, computer experience.
    • Contact: Stephen D. (istvan14 AT gmail.com)
    • License: No License Information
    • URL: http://code.google.com/p/fluidium/
    • Status: July 05, 2008 -- Third stable development release.
    • Unknown



  • Frame - The main design goals were to create the most simple operating system (KISS) and to learn how to make one. It is written in assembly (FASM) with custom preprocessor. New website will be available soon.
    • Contact: Mariusz (assassinxp93 AT gmail.com)
    • License: No License Information
    • URL: No URL
    • Status: January 24, 2011
    • Unknown



  • FreeDOS - Today, FreeDOS is ideal for anyone who wants to bundle a version of DOS without having to pay a royalty for use of DOS. FreeDOS will also work on old hardware, in DOS , and in embedded systems. FreeDOS is also an invaluable resource for people who would like to develop their own operating system. While there are many free operating systems out there, no other free DOS-compatible operating system exists.



  • FreeNOS - FreeNOS (Free Niek's Operating System) is an experimental microkernel operating system for learning purposes, licensed under the GPLv3.
    • Contact: Niek Linnenbank(nieklinnenbank AT gmail DOT com)
    • License: No License Information
    • URL: http://www.FreeNOS.org
    • Status:
    • Unknown



  • FritzOS - FritzOS is a (incomplete) OS. Ideas will be added to the OS as it's developed and, it will run on the x86 platform. FritzOS will have a GUI and be easy to use & understand.FritzOS is programmed in Assembly/Intel Syntax, C, and C++.
    • Contact: Tom Fritz(jrfritz47 AT hotmail.com)
    • License: No License Information
    • URL: http://fritzos.sourceforge.net
    • Status: November 24, 2002 -- kernel-prekernel-0.7.1(C++) (CVS empty)
    • Unknown



  • FROST - FROST is an OS written in FreeBASIC based on the FROST-Microkernel.



  • FrostOS - FrostOS is an operating system developed by SecurityOverride. The OS aims to deliver a security auditing experience like none other.



  • Fudge - Fudge is a very basic 32 bit microkernel operating system written in mostly C except for some parts written in Assembler. The goal is to move as much functionality as possible into userspace while still maintaining fast execution times.



  • FunghOS - free, open-source, light-weight OS in active development


G


  • GalaXyOS - This is a new OS written in C. We want that this OS is simple to use but highly sure and stable. One has already many as an example utility writer of simple text. It recognizes the frequency of the CPU and the amount of RAM.
    • Contact: Massimo Angiolani(massimoangiolani AT libero.it)
    • License: No License Information
    • URL: http://www.galaxyos.cjb.net
    • Status:
    • Unknown



  • Game6 - This kernel is still in the planning stages, but it will be a microkernel. It is written to experiment with microkernels as well as to use as simple code as possible, getting the system working before caring about speed. Game6 is a codename (the OS is general purpose).



  • GeekOS - Earlier versions of GeekOS have been used as the basis for student projects in operating system courses. This new development version of GeekOS is a rewrite designed to address limitations in the original version. It is not specifically designed for course projects, but because it strives for simplicity, it might be useful for people interested in learning about OS kernel implementation.



  • Gemini - The goal is to create a production quality micro kernel based on the latest findings in operating system research. The result will be a micro-kernel having the following features: no abstractions, safe those necessary for protection, minimal set of primitives, support for capability based security, support for resource management needed for real-time and multimedia applications.



  • Genius HorizonOS - This OS is made by a schoolboy (he was born in 1996) and is a small 32-bit, closed source OS but you still can ask the developer about how did he do that to help you to do the thing that you asking about. It supports FAT12, floppy disks, memory management, keyboard, and it will support graphics soon.





  • GZistem - A simple 32bits operating system being developed in C
    • Contact: gzaloprgm (gonzaloavilaalterach AT gmail.com)
    • License: No License Information
    • URL: http://gzaloprgm.com.ar
    • Status:
    • Unknown


H


  • Haiku - Fully featured open source operating system inspired by the commercial Be Operating System. Has a preemptive, modular kernel, reasonable POSIX compatibility, a nice (non-X11-based) GUI, and a wide variety of ported and native applications (including a WebKit based browser).
    • Contact: haiku-development@freelists.org
    • License: No License Information
    • URL: http://www.haiku-os.org/
    • Status: September 13, 2009 -- R1 alpha 1 -- active
    • Unknown



  • HelenOS - Preemptive microkernel multiserver design, SMP support, lightweight IPC, thread-local storage and user-space managed fibrils
    • Contact: helenos-devel@lists.modry.cz
    • License: No License Information
    • URL: http://www.helenos.org/
    • Status: August 9, 2012 -- 0.5.0 -- active
    • Unknown



  • HeliX - HeliX is a german open-source OS. It has a nice shell and already supports FAT 12, multitasking, keyboards and mice and very, very much more... HeliX is still in development and it doesnt exist a long time , so there are many features to come! At this point of time there are no downloads at the webpage, because there are still some heavy bugs (; -please be patient; they'll come!
    • Contact: Illusoft(Ufo AT sandrakoenig.de)
    • License: No License Information
    • URL: http://www.helixos.de.vu
    • Status:
    • Unknown



  • Horizon - Horizon is a research Operating System. It is written for the i386 processor family, using C (gcc) and some Assembly (nasm). Its main goal is to develop a natively network-integrated structure, so that I/O operations (both local and network ones) happen in the same manner. This way every Horizon node on the Internet (or in a LAN) can communicate natively by means of a Network File System.


I


  • IanOS - IanOS is a small OS written for the x86_64 processors. The main goal of this OS is to be a system that is simple enough for beginners to understand yet sufficiently complex to demonstrate principles of OS design. It is not intended, at this stage anyway, to be a production OS. IanOS is written in assembly language and C. Full source code, documentation, and build instructions are available. There is a blog where design principles and changes are discussed.
    • Contact: Ian Jack(ian AT ijack.org.uk)
    • License: No License Information
    • URL: http://www.ijack.org.uk
    • Status: March 31, 2012
    • Unknown



  • IBOX - IBOX is a "modular" operating system for the x86 desktop. The main goals of this os are: Portability, Stability, Security, and Customizable. It will be written in assembly language and C. I suggest you take a look for yourself.



  • Idylla OS - Idylla OS is small and simple operating system. It will be written in assembly language and C. The main goals: Portability, Stability, Security and Customizable.
    • Contact: milyges (milyges AT gmail.com)
    • License: No License Information
    • URL: http://www.idyllaos.org
    • Status: July 26, 2008 -- 0.1-alpha
    • Unknown



  • Infinitech - New project under way. The system is being written in C++.



  • ISOS - ISOS is a very simple multithreaded OS for the Evaluator-7T board from ARM. It is based on JayOS also listed on this page. It features pre-emptive multi-threading, communication between threads, etc. and hardware drivers.



  • IX - Operating System IX is an x86 64-bit research kernel project that aims to design a kernel for general purpose operating systems (including desktops and servers).


J


  • Jaspos - Jaspos started as a bit of messing around with booting but has now transformed into a source-available-on-request, serious operating system project. It's currently in development at early stages and only x86 assembly code is being used to program it. It is a micro-OS by today's standards as it fits easily on a 1.44MB floppy disk.



  • JaysOS - JaysOS is a "toy OS" that runs on the Gameboy Advance. It provides preemptive threads, semaphores, condition variables, and message queues.



  • Jimix - Jimix is an x86(_64) OS based on a microkernel architecture. It is written in C++ and all IPC methods are wrapped over a Remote Method Invocation paradigm.
    • Contact: James Molloy (james__AT__jamesmolloy_co__uk)
    • License: No License Information
    • URL: http://jimix.googlecode.com/
    • Status: Invalid month: n/a n/a, n/a -- n/a
    • Unknown



  • Jinix - Jinix is a closed source operating system built from scratch.
    • Contact: Jos Kuijpers aka (jos_kuijpers_ AT hotmail.com)
    • License: No License Information
    • URL: http://www.jinix-os.com
    • Status:
    • Unknown



  • JNode - JNode (Java New Operating System Design Effort) is an open source java OS written fully in java (with a very small assembler nano-kernel).
    • Contact: Martin Husted Hartvig (hagar AT jnode.org)
    • License: No License Information
    • URL: http://www.jnode.org
    • Status:
    • Unknown



  • JonOS - JonOS is a 16-bit operating system made entirely in asm, released under the GNU General Public License. It can't do much yet, but it has a cool prompt and a nice clock ;)
    • Contact: Wojciech Komorowski aka GigaWolf(gigawolf AT hotmail.com)
    • License: No License Information
    • URL: http://sail.to/jonos
    • Status:
    • Unknown



  • JouleOS - Something simple and different; kind of like pie except with 32bits --This is basically a dead project.
    • Contact: Earlz (earlz AT earlz DOT biz DOT tm)
    • License: No License Information
    • URL: http://earlz.biz.tm/old_site/desc.php
    • Status: October 14, 2006 -- JouleOS Version 0.0.8 Alpha
    • Unknown



  • JPasKernel - An operating system written in Object Pascal targetting embedded platforms
    • Contact: jeppe@j-software.dk
    • License: No License Information
    • URL: http://j-software.dk
    • Status:
    • Unknown


K


  • Kairos - Kairos is a revolution in operating system design: the focus is simplicity, minimalism, and power; doing away with 'legacy compatibility' and restoring optimal timing and throughput efficiency by utilising the full potential of the 64 bit architecture coupled with the modularity and reliability of a modern μKernel.
    • Contact: Joshua K(stable.entropy AT gmail.com)
    • License: No License Information
    • URL: http://kairos.sf.net
    • Status: -- Planning Stage
    • Unknown



  • Kid Operating System (KOS) - A French operating system project. A modular OS, written in C, with an object oriented driver management. Use protected mode. Lots of documentation on the Web site.
    • Contact: Julien Munier, Thomas Petazzoni, David Decotigny(thomas.petazzoni AT enix.org)
    • License: No License Information
    • URL: http://kos.enix.org
    • Status:
    • Unknown



  • Kiddie OS - Research operating system of mobile autonomous robots. It is suggested the system will act as the common intelligence for different types of machines including autonomous and humanoid robots able to collaborate with each other. It utilizes an idea and concept of self-learning adaptive operating system.
    • Contact: Artur Emagulov (artur.a.e AT gmail.com)
    • License: No License Information
    • URL: http://code.google.com/p/kiddie/
    • Status: -- Started in C, later rewritten in C++. Has bootable microkernel, isr's, vm, simple scheduler, driver interface, stub drivers, pci enumerator, tiny jvm and experimental pure java drivers. Supports both x86-32 and ARM architectures. There are plans to add multicore support and native gpgpu computing support to run parts of OS on it.
    • Unknown



  • Kolibri OS - Kolibri OS was a fork of the 32-bit version of Menuet OS but has changed much along the way. The Kernel and most applications, libraries and drivers are written in FASM.
    • Contact: The Kolibri OS team ()
    • License: No License Information
    • URL: http://www.kolibrios.org
    • Status: December 13, 2009 -- 0.7.7.0
    • Unknown



  • KOS - KOS is a modest OS meant to incorporate purely experimental features.
    • Contact: Karthik Kumar (karthikkumar AT gmail DOT com)
    • License: No License Information
    • URL: http://guilt.bafsoft.net/downloads/wip/KOS
    • Status: -- Kernel has working interrupt handlers. Ongoing is the design process for the Re-entrant memory allocator, Kernel Re-entrancy and Subsystem Re-entrancy.
    • Unknown



  • Kryos - Kryos is an open source hobby/developer Operating System. Kryos has a basic command line interface (cli), multitasking, drivers, debugging and basic executable loading, not to mention a lot of other features


L


  • L4ka - L4 is an extremely fast microkernel available for x86, ARM, MIPS and other architectures.
    • Contact: University of Karlsruhe, Germany(l4ka AT ira.uka.de)
    • License: No License Information
    • URL: http://l4ka.org/
    • Status:
    • Unknown



  • Lemadops OS - Lemadops is my atempt at writing an OS. It's not very advanced but it will be free to download if anyone wants it. I am aiming for a DOS like system.
    • Contact: Jonathan (Sparkles)(lemadops AT hotmail.com)
    • License: No License Information
    • URL: http://lemadops.tripod.com/
    • Status:
    • Unknown



  • Leviathan - Leviathan is a micro/modular 64 bit kernel that aims to be used by the general public. It includes

support for my rwfs filesystem which can handle 500 million exabytes of storage.



  • Lily - Lily is a microkernel based on the I/O automata formal model designed to support the development of reactive programs. Device drivers and programs are expressed as automata that can be composed at run-time. x86(32-bit)/C++/C.



  • Logram - Logram is a small operating system fully 64-bit. It uses its own file system (FSL), and recognizes the keyboard. It is developed since April 2008. Logram is maintained by a large community of enthusiasts. It is also a site where you can ask questions and talk about your own OS (as osdev.org). The site is in french.
    • Contact: Denis Steckelmacher(steckdenis AT yahoo.fr)
    • License: No License Information
    • URL: http://www.logram-project.org
    • Status: -- v0.0.7.5 : File system, memory, extensions, syscalls, keyboard
    • Unknown
    • The validity of this entry is questionable;
      It seems that Logram is no longer an OS, but a Linux distribution.


  • LUnix - LNG is an operationg system primarly for the good old Commodore64 home-computer. There also is a native version for the successor Commodore 128. Ports to other 6502/6510 driven 8-Bit Computers are possible but not yet started. LUnix started in 1993 and reached the internet in 1994. In 1997 LUnix 0.1 was rewritten from scratch, the result is LNG.
    • Contact: Daniel Dallman(Dallmann AT heilbronn.netsurf.de)
    • License: No License Information
    • URL: http://lng.sourceforge.net/
    • Status:
    • Unknown


M


  • M3 - M3 is an operating system targeting the IA32 architecture. It is currently under development. The goal for this project is to learn the ins and outs of OS development, and share this knowledge by writing tutorials and well-commented code.



  • Mammoth OS - Mammoth OS is a compact, lightweight kernel designed to have a monolithic core, and a modular kernel extension system. We hope to have a full implementation of a C compiler toolchain, and other languages such as C++ and Assembly by Augest 2009.
    • Contact: callum(at)rohedin.co.uk
    • License: No License Information
    • URL: http://launchpad.net/mammoth-os
    • Status: February 18, 2009 -- Version 0.0.2. Still very basic pre-alpha. Implemented proper I/O functions. Next release: Advanced Output, Memory Manager.
    • Unknown


  • ManRiX - ManRiX OS is open source microkernel based operating system with POSIX compliance.ManRiX OS is written totally from scratch using C and Assembly language.
    • Contact: Manish Regmi(regmi_manish AT gmail.com), Rajesh Bikram R.C. (rajesh.rc AT gmail.com)
    • License: No License Information
    • URL: http://manrix.sourceforge.net/
    • Status:
    • Unknown



  • Mattise - Mattise is a very simple hobby operating system for x86 architectures. It is a monolithic kernel written completely in C and assembly with paging, ELF loading (modules and executables) and a working Newlib port. It has a rudimentary shell and a working nasm and binutils port.
    • Contact: Matthew Iselin (pcmattman AT users.sourceforge.net)
    • License: No License Information
    • URL: http://mattise.sourceforge.net/
    • Status: April 1, 2007 -- basic C-only version of the kernel, without paging or newlib; basic binary file loader
    • Unknown



  • MazzanetOS - MazzanetOS is a DOS/UNIX-like operating system written in assembly language and C++. It currently runs off a floppy disk and includes a graphics demo. It will run (hopefully) on any PC.



  • Media OS - Media OS is a secure, microkernel paradigm, 64bit multiprocessor, preemptive multitasking, operating system designed with future technology in mind to take full advantage of hardware. At this point it is non functional, but a CVS exists for it if you would like to take part.



  • Melon - Melon is a C++ operating system designed to be simple and fast and to provide a coherent OO framework for developing applications.



  • MenuetOS - 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. Menuet isn't based in any particular operating system, since the idea has been to remove the extra layers between different parts of software, which complicate programming and create bugs. Menuet's application structure is not specifically reserved for asm programming since the header can be produced with practically any other language. However, the overall application programming design is intended for easy 32 bit asm programming. The GUI is extremely easy to handle with assembly language. http://MenuetOS.net/ .



  • Mettā - Mettā is a social, mobile, multimedia OS. The goal is to be the backbone of social interactions for users in post-internet era, through chaos management. Written in C++ for multiple architectures.
    • Contact: Berkus (berkus AT exquance.com)
    • License: No License Information
    • URL: http://metta.exquance.com/
    • Status: -- Running release snapshots available at the site. Still in infancy though.
    • Unknown



  • MicroBe OS - Hobby OS aimed to learn how things are done. Written in x86 assembler.
    • Contact: Vladimír Šiman(onlineque AT seznam.cz)
    • License: No License Information
    • URL: http://microbe.clew.cz/
    • Status: -- With huge time gaps developed since 1997 but so far no release available to public.
    • Unknown



  • Micro OS X - A Free DOS like Operating System which fits on one floppy disk. The new Micro OS X is the third generation of Micro OS. The Micro OS X Workspace Manager is based on GEM Desktop.
    • Contact: Bj?rn Schnackenbeck(megadriveag AT yahoo.de)
    • License: No License Information
    • URL: http://www.mosx.de.vu/
    • Status:
    • Unknown
    • The validity of this entry is questionable;
      WARNING! This URL Website is not in English.


  • MIK - A hobbyist 32-bit x86 OS coded completely in pure assembly. Goals are a fully capable operating system with paging/multitasking/FDD, HDD and USB support.
    • Contact: Pascal Smit(smitpascal AT gmail DOT com)
    • License: No License Information
    • URL: No URL
    • Status: -- Not Yet Releasd
    • Unknown



  • MikeOS - A hobbyist 16-bit x86 OS with rudimentary DOS compatibility that boots from a single floppy disk.
    • Contact: Mike Saunders(okachi AT gmail DOT com)
    • License: No License Information
    • URL: http://mikeos.berlios.de/
    • Status:
    • Unknown



  • Mini Operating System - "a 21st Century Operating System"; "easy to use"; written in a Java dialect called Turk/2 designed to be more robust than standard Java; all program operations can be done with direct manipulation (WIMP); portable to all CPUs.



  • Minirighi - A didactic Linux-like kernel.
    • Contact: Andrea Righi(righiandr AT users.sourceforge.net)
    • License: No License Information
    • URL: http://minirighi.sf.net
    • Status:
    • Unknown



  • Mojo OS - Mojo OS aims to be a modern desktop operating system. Ity is currently under active development but far from finished. Read much more on the homepage.
    • Contact: Christian Lange (clange AT softwarewizard.dk)
    • License: No License Information
    • URL: http://www.softwarewizard.dk/mojo/
    • Status: November 19, 2009 -- Current version 0.2.2
    • Unknown



  • Mona OS - Mona OS is a small, new and fast microkernel system written in C++ for Intel x86 architecture. It is neither a POSIX or Windows clone.
    • Contact: Higepon (higepon AT users.sourceforge.jp)
    • License: No License Information
    • URL: http://www.monaos.org/
    • Status:
    • Unknown



  • MOS - Mother Operating System – An operating system designed and developed in C/C++ to work on x86 (alike) processor. It is a 32 bit protected mode OS using x86 architectural features for memory management (paging, segmentation) and process management (TSS, Call Gates, Interrupt Gates). Aim is to build a minimal complete packaged OS with support for USB, Internet (wifi) and a cool GUI -> and make it suitable for tablet pcs/netbooks/mobiles.



  • MSB-OS - An OS originally designed as a platform for my own A.I. work (linguistics), but soon to be used for education purposes as well. All programming of MSB-OS has been done directly in machine code (without using assembler).



  • MuOS - Little 32-bit OS with continous development and with good documentation.



  • MVS/380 - IBM's old IBM mainframe operating system (MVS) was public domain. With a freely available IBM hardware emulator available, this operating system was dusted off and being given a new life with some radical architecture changes. There's a similar VM/380 available too, for another IBM mainframe OS.
    • Contact: Paul Edwards (fight.subjugation@gmail.com)
    • License: No License Information
    • URL: http://mvs380.sourceforge.net
    • Status: -- Version 1.0 released and a group of people driving it forward on a daily basis instead of being a one-man project
    • Unknown



  • MyNOS - The MyNOS project aims at developing a new and different operating system, based on high-level languages. MyNOS will be based on the OCaml bytecode interpreter. We'd like to explore microkernel architecture and new language definition too.



  • MyOS - MyOS is a free operating system for x86 and mips, coded in C++ with elf, vesa, ata and ext2 supports.



  • MysteriOS - Extremely modular monolithic kernel (just like Linux but much more modular) designed to be potentially portable on almost any platform
    • Contact: Pierre Krieger (webmaster AT tomaka17.com)
    • License: No License Information
    • URL: http://mysterios.tomaka17.com
    • Status: -- No release for PC, only for GameBoy Advance. Current build (05/2009) has a graphic GUI and can run small native Linux programs (ie. a binary working on Linux could work on MysteriOS without recompiling it)
    • Unknown



  • MysticOS - MysticOS is an exokernel based OS. Its main goal is to be able to adapt to the users wishes and abilities at run time, providing the perfect environment for anybody. Current features include FreeBasic support and hardware accelerated graphics (2D and 3D).
    • Contact: Marcel Sondaar(marcel_willem AT hotmail.com)
    • License: No License Information
    • URL: http://dimensionalrift.homelinux.net/combuster/mos3/
    • Status: 2009 -- The OS is currently pre-alpha - there are no official releases yet. However, nightly builds, source code and documentation are available.
    • Unknown



  • MyXomycota - MyXomycota is a monolithic system running in protected mode and using paging. It is written in C, newlib (a small stdlibc) is partly ported. It runs from a floppy disk (loaded with BIOS interrupts on startup, hence even USB floppy disk drives are supported). I am sorry but many texts are German.
    • Contact: Max Reitz (xanclic@googlemail.com)
    • License: No License Information
    • URL: http://sourceforge.net/projects/myxomycota
    • Status: April 4, 2009 -- Kernel with programs running in user mode (simple shell, brainfuck compiler, simple editor (cedit), standard programs (ls, cp, rm, cd, echo, file, top, mount) and some ported programs (aargh interpreter, flat assembler 1.67.26, ed)). -- 0.003 (pre alpha)
    • Unknown


N


  • Naked Lady - An open source minimal base operating system, suitable for installation on an IBM compatible computer fitted with a IA32 compatible processor.
    • Contact: Mark Hobley(markhobley@yahoo.deletethisbit.co.uk)
    • License: No License Information
    • URL: http://markhobley.yi.org/nakedlady/
    • Status: -- Bugs in the build toolchain are preventing system compilation
    • Unknown


  • Nameless OS - a portable multi-user Unix-like OS. i386, amd64 and ARM. Fully protected. GUI without X. Modular kernel. Closed source.



  • Nanos - Nanos is a protected mode nanokernel OS for x86 computers. It is written in assembly and assembled with NASM.
    • Contact: Peter Hultqvist(email at peter.h endnode.se.)
    • License: No License Information
    • URL: http://lab.endnode.se/nanos/
    • Status: -- Bootable kernel, no futher work will be done.
    • Unknown


  • Nano Os - Nano Os is a Hobby/Educational Operating System Project.

It is a monolithic kernel OS for PC and compatibles with 386 and above. It is written in g++ and assembly(NASM)

    • Contact: Ashok Shankar Das(ashok[dot]s[dot]das [at] gmail[dot]com)
    • License: No License Information
    • URL: http://code.google.com/p/nanoos/
    • Status: -- 2 and half years spare time development, Protected mode, Memory Manager, Shell, Basic multi Tasking
    • Unknown


  • NDK - NDK is neuraldk's ongoing experimentation at creating a new, modern operating system. Currently in its infancy, it's of little use to anyone but the beginning operating systems developer.



  • Neptune Operating System - Neptune is a self hosting 32 bit highly modular graphical multitasking operating system written in C and some assembly.





  • NukeOS - NukeOS is a hobby OS, currently being written in C and Assembly
    • Contact: charlie@ricchio.com
    • License: No License Information
    • URL: [None yet =3 None yet =3]
    • Status: -- Not even past the bootloader stage =D
    • Unknown


O


  • Oberon System - The Oberon System is an academic operating system which was developed by Niklaus Wirth and Jürg Gutknecht in the second half of the 1980s. It is available from ETH Zürich and a more current multiprocessor version can be found here: BlueBottle (see also A2). Note that some stuff on these pages appear outdated, but this may be more a problem of keeping the Web-pages as current as the System. An active mailing list is here: Oberon Mailing List Archive. More current and in depth documentation is included in the systems, although you (sorrily) have to master their (partially) unconventional user-interface before you can access the documentation. Many dead links in Native Oberon reference site can be reanimated by replacing www with www-old.



  • ominOS - ominOS is a small lightweight kernel that aims to be simple to and have easy to understand source code to learn from. Its definitely not doing anything revolutionary, but I love working on it and seeing where it goes. Currently the os has ports of Nasm, binutils, and some graphic libraries. Also has a partially implemented TCP/IP stack.
    • Contact: Anthony Lineberry (anthony.lineberry AT gmail DOT com)
    • License: No License Information
    • URL: http://ominos.sourceforge.net
    • Status: -- 0.0.1-alpha
    • Unknown



  • Onem OS - Onem OS is an x86-16 assembly kernel. The goal is to be able to run it off of a usb thumb drive.



  • Orange OS - The Orange OS Project started with the intent to design a lightweight Operating System. It contains a small kernel designed for those interested in the low-level, practical aspects of building an x86 system. Currently, it is designed to fit on a floppy.



  • OS/C - OS/C is my small, open-source, Unix-like OS. It is (and was) designed to preform networking tasks and other file-oriented processes whiltaking up very little of the computer's processing power.



  • Osiris - A modular OS written in C/Assembly. Grub used as the boot loader. Paging, Multi threading, basic vesa mode GUI. Dynamic ELF support, Small C Library(Safe String, Math, IO, Mem). Grub loads the Hal which in turn loads the Kernel and other OS Services. Currently working on a USB stack, MP support, NIC Drivers, reworking the GUI system.
    • Contact: Sanchan M(lonesamurai5 AT gmail.com)
    • License: No License Information
    • URL: http://tecreat.com/
    • Status:
    • Unknown



  • OS-periment (The) - This project aims at cleaning up the mess that desktop OSs have become, going back to a simple, lean and evolutive state. It also tries to be an OS which is solely optimized for use on personal computers from the ground up, like BeOS was, and unlike OSs like the Windows NT family or most Unices which try to address many other, sometimes conflicting needs (like those of company servers). Finally, it aims at improving the quality of the everyday desktop user experience through increased reliability, better consistency in the user interface, simpler interaction models, lower annoyance...



  • OSSO - A Micro Kernel Operating System written from scratch
    • Contact: Alessandro Iurlano(iurlano at users.sourceforge.net)
    • License: No License Information
    • URL: http://osso.sourceforge.net
    • Status:
    • Unknown



  • Oxygen Kernel - Graphical microkernel designed for portability and modern systems.


P


  • Particle OS - Particle OS is a 32-bit operating system. Visit the website for more information.



  • Patricknet - Patricknet is an OS (Operating System) which is not another Linux kernel. Patricknet at this stage uses Grub and is built using NASM, C , GCC. The code is always available. If you want to help with the development proccess please feel free to e-mail.
    • Contact: Patrick V - Project Manager: Patrick@pvcomputers.co.nz
    • License: No License Information
    • URL: http://www.patricknet.pvcomputers.co.nz
    • Status: -- Patricknet Pre-Alpha 0.0.0.1 (Website Coming Soon) -- Active
    • Unknown



  • PDOS - Public Domain Operating System - One of very few operating systems that have an explicit "released to the public domain" notice. What that means is that if you spend time on this, and you later see a commercial use for it, there is absolutely no restriction on selling/modifying etc, any more than you would dig up Shakespeare and ask him if it's OK to use "Hamlet". It is designed to look like MSDOS, and can currently execute some MSDOS executables unchanged. It's written in C, with some assembler, and a 32-bit version, that also looks like MSDOS, but isn't, is included.
    • Contact: Paul Edwards - main author: fight.subjugation@gmail.com
    • License: No License Information
    • URL: http://pdos.sourceforge.net
    • Status: -- PDOS 0.86 is sufficiently complete to allow some commercial tasks to be theoretically possible. -- Current activity is restricted to the C runtime library that it is operates with, rather than the OS itself.
    • Unknown



  • Pebble Operating System - Pebble is a 32-bit operating sytem for IA-32 systems. It can run MS-DOS and DPMI compatible applications and will provide advanced features such as multitasking and paging. It will be a good platform to run old MS-DOS and embedded programs.



  • Pedigree - Monolithic OS under development by JamesM, bluecode and pcmattman. Bringing several backends up simulaneously - x86, x64, MIPS32, ARM and PowerPC. Kernel written in C++ with the obvious bits of ASM.



  • Pépin - A small and simple kernel created for educational purposes. A great care is put on keeping the code as simple and clear as possible. The project home page provide a full tutorial (currently only in french) explaining how to code a kernel using a bottom-up approach. Pépin is written in C and some i386 assembly. Support : Grub, 32bit Protected mode, Interrupts, Segmentation, Paging, Syscalls, Multi-tasking, IDE PIO mode, Ext2FS (read), ELF, Signals. Every stuff released under GNU GPL and GNU FDL terms.

[1]



  • Perception - A 'managed' operating system environment built around a high level bytecode (Better website coming soon).
    • Contact: MessiahAndrw.
    • License: No License Information
    • URL: [- -]
    • Status:
    • Unknown



  • Plan 9 - Plan 9 is a distributed system built by Bell Laboratories (now Alcatel-Lucent), the same group that developed Unix, C, and C++. ... it uses three kinds of components: terminals that sit on users' desks, file servers that store permanent data, and other servers that provide faster CPUs, user authentication, and network gateways. ... In typical use, users interact with applications that run either on their terminals or on CPU servers, and the applications get their data from the file servers. The CD image is built every night from the latest source and also work as a `live CD'. There is a Plan 9 Wiki.





  • Polix32 - Polix is a 32-bit operating system for x86, based on Linux kernel.



  • POS - Peter Operating System is my os research project started in year two in university 1998.



  • POSYS - POSYS: Programmers Operating SYStem Small, fast, dynamic, secure. (In development) Language: NASM + CC386. Useful links on page.



  • Prex - The Prex project is an open source initiative to provide a portable real-time operating system for embedded systems.
    • Contact: Kohsuke Ohtani(kohtani AT users.sourceforge.net)
    • License: No License Information
    • URL: http://prex.sourceforge.net/
    • Status:
    • Unknown



  • Pro-OS - A 32-Bit OS for the x86. A microkernel architecture targetted for speed.



  • PuddingOS - PNL/OS - A small, fast and complete Operating System in 32 bits



  • Pure64 - Pure64 is a second stage bootloader for 64-bit PC's with compatible Intel or AMD processors. The loader gets the computer into a full 64-bit state with no legacy compatibility layers. Pure64 also enables and configures all available Cores/CPUs in the computer. An information table is stored in memory after Pure64 is finished that stores important details about the computer.


Q


  • Quark Operating System - Quark is an Object Oriented 32 bit operating system. It aims to be a complete multitasking kernel.



  • QUARN - OS project in assembler and C. System works in 32bit Protected Mode, with multitasking and multithreading. There is also ELF attendance and dynamic linker. Quarn OS has drivers for FDC, PIT, RTC, serial port, keyboard, VGA (text mode), PCI bus and many more. It also provides tool that allow to configure it, possibilities are very wide. For example you can chose if you want it to run with full preemption, user-space preemption or without preemption. Quarn OS also has special Artificial Intelligence module that is used in scheduler, but there are plans to use it in many more ways.


R


  • RDOS - 32-bit x86 based OS written mostly in assembly. Provides protection with segmentation and paging. Has drivers for FAT-based file systems, TCP/IP, USB, sound, LFB based VESA support with a GUI API. The user-level API is based on C++ classes. OpenWatcom is used for building both applications and device-drivers.
    • Contact: Leif Ekblad(leif AT rdos.net)
    • License: No License Information
    • URL: http://www.rdos.net
    • Status: -- Stable, has some 400 commercial installations.
    • Unknown



  • ReactOS - A GPL project to clone WinNT written from scratch. It runs: Firefox, OpenOffice 2,Quake III Arena, and much more. A lot of work is still need to be done. Looking for developers.
    • Contact: a team of developers(ros-general AT reactos.com)
    • License: No License Information
    • URL: http://www.reactos.com
    • Status: -- 0.3.13 - Alpha Stage (Not recommended for everyday use)
    • Unknown



  • Rose, Reaver Project OS - Open source (with modified zlib licence) OS written mainly in C++, aimed at taking maximum advantages from SMP and NUMA on IA-32e. Not Unix-ish, not POSIX, with hybrid kernel, keeping per-core and per-NUMA domain drivers in kernel space, and other drivers in user space for easiness of synchronizing the whole thing in environment with per-domain kernel instance. Project statistics can be tracked on Ohloh project page.
    • Contact: Michał "Griwes" Dominiak(griwes AT griwes.info)
    • License: No License Information
    • URL: https://github.com/griwes/ReaverOS
    • Status: -- Another rewrite just started, will feature Booter v0.3 and (probably) (finally) kernel v0.1 this time
    • Unknown



  • RedOS - RedOS is a small operating system written in C ,assembly it work on PM32, Just come to see.
    • Contact: ELAATIFI Sidi Mohamed(elaatifi AT hotmail.com)
    • License: No License Information
    • URL: http://smelaatifi.free.fr/redos
    • Status: -- Front page only, last updated in 2002
    • Unknown



  • Retro Rocket - Retro Rocket is a 32-bit protected mode operating system with the majority of the userland written in BBC BASIC, using a builtin interpreter. It is designed to imitate the BBC Micro's MOS (Machine Operating System) in appearance and behaviour, with modern concepts such as multitasking, memory protection and much more modern system specs.



  • RhinOS - RhinOS is a french 32bits x86 micro-kernel like OS. At the time of writing, it has its own bootloader, a physical memory manager (buddy system), a virtual memory manager for the kernel (slab allocator and buddy system), a minimal thread management and IPC via message passing.
    • Contact: Gab (gb.viel AT gmail.com)
    • License: No License Information
    • URL: http://code.google.com/p/rhinos/
    • Status: -- Code Review for thread management and IPC
    • Unknown



  • Rhombus - Rhombus is a microkernel-based operating system written in C for protected mode x86. It currently contains a kernel, drivers, shell utilities, and a C library, all written from scratch. It has a distributed VFS mechanism, a human-readable/writable remote procedure call protocol, and some other neat features. It is roughly UNIX-like, but with some major architectural differences. It is distributed under an OpenBSD-style license. It has been under pretty active development for the last three years, and is nearing a public alpha/beta release.





  • RMMTOS - Real Mode Multitasking Operating System
    • Contact: Mikko Paukkonen (mikko.paukkonen AT gmail.com), mikkop92 at the forum
    • License: No License Information
    • URL: http://code.google.com/p/rmmtos/
    • Status:
    • Unknown



  • RMoX - A highly concurrent OS written (mostly) in the occam-pi parallel programming language. The OS is designed and built from large numbers of small concurrent processes that are cooperatively scheduled and communicate via synchronous channels. Currently only targets x86 based systems (586 and up) with embedded platforms (PC/104 and PC/104plus) in mind.
    • Contact: Fred Barnes (F.R.M.Barnes AT kent.ac.uk)
    • License: No License Information
    • URL: http://rmox.net/
    • Status: -- experimental but functional
    • Unknown



  • Ruby Operating System - Harvest the best features from other operating systems and combine it into ROS. ROS should be user friendly. As much as possible should be written in Ruby, so that a user, which masters Ruby, are in full control of ROS.
    • Contact: Simon Strandgaard(neoneye AT adslhome.dk)
    • License: No License Information
    • URL: http://ros.rubyforge.org/
    • Status: -- Design phase
    • Unknown



  • RYMOS - Graphic os under construction maked with NASM and GCC
    • Contact: Roberto Rodriguez(prfiredragon AT gmail.com)
    • License: No License Information
    • URL: http://rymos.cf.gs/
    • Status: -- PreAlpha
    • Unknown


S


  • Saerox - An OS meant to be extremely stable and use resources efficiently. It is currently in development and will run on Intel x86. Written in assembly and C. It is not commercial yet, so help is greatly appreciated.
    • Contact: Jason Prince (jason.prince@saerox.com)
    • License: No License Information
    • URL: http://www.saerox.com/
    • Status:
    • Unknown
    • The validity of this entry is questionable;
      Website down


  • sanos - A small 32-bit x86 operating system kernel for jbox appliances. A jbox is a JavaOS server appliance running on standard PC hardware. This enables you to run java server applications without the need to install a host operating system. Only a standard Java HotSpot VM and the sanos kernel are needed.
    • Contact: Michael Ringgaard(mri AT jbox.dk)
    • License: No License Information
    • URL: http://www.jbox.dk
    • Status:
    • Unknown



  • Sartoris Microkernel - The Sartoris Project aim is to develop a portable microkernel and a set of operating system services that support: - Efficient implementation of local system calls. - Concurrent execution of several OS 'personalities', ie a UNIX environment and a native microkernel-based interface. - Simple and elegant integration of distributed operating system components.



  • SauOS - SauOS is a 32-bit protected mode kernel written in C. It was initially based on bkerndev but is now being rewritten in a branch.
    • Contact: imate900 (asteinborn SeventyEight AT Gmail DOT com)
    • License: No License Information
    • URL: http://sauos.googlecode.com/
    • Status: -- At present the kernel is being rewritten
    • Unknown



  • ScorchOS - A 32-bit pmode OS aimed to be light-weight, fast, well-documented and easy to develop.
    • Contact: Bob Moss(bobmoss AT scorch.com)
    • License: No License Information
    • URL: http://sites.google.com/site/scorchopsys/
    • Status: -- Has just released its 3rd offering. Back under active development.
    • Unknown



  • Sea - A simple OS by piranha designed (eventually) for speed, stability and utility. It has multitasking, usermode, MM, FS, and various other lower functions. Has ata, ext2, and other drivers. A hobby OS would discribe it well.
    • Contact: goldenpiranha "AT" gmail.com)
    • License: No License Information
    • URL: http://code.google.com/p/microsea/
    • Status: -- Working on 0.2 (Better resource locking, new userspace system, dynamic linking, priority schedulers, networking)
    • Unknown



  • SharpOS - SharpOS is the original open source effort to write an operating system in 100% C#, with a strong focus on security, reliability, and maintainability. It has a wiki.




  • Shunya Operating System - The project Shunya explores the fundamentals of Operating Systems and deals with creating a simple OS which can be loaded by a Multiboot Compliant Bootloader. Though it can't be called a complete OS as it just provides a bare platform for further development but it utilizes a C Library and other Memory Management Tasks.



  • SkyOS V3.0 - 32Bit PM, Paging, Multitasking, VM86, GUI (SkyGI/GiGFX), VFS,FAT12/16/32,SkyFS,ProcFS,DeviceFS,Network,TCP/IP,Keyboard, Serial,PS/2,IDE,ATAPI,FDD,RAMDISK,Soundblaster,VESA2.0,CT6xxxx, Dynamic loadlable modules, PnP, PCI, LIBC, SkyGI Library, Graphical Applications.
    • Contact: Szeleney Robert(Robert.Szeleney AT br-automation.co.at)
    • License: No License Information
    • URL: http://www.skyos.org
    • Status:
    • Unknown



  • smiddyOS - smiddyOS is an operating system that is written in FASM asm. It is mainly a learning environment for the author, with pretty loose goals.
    • Contact: smiddy on BOS forum, Dex OS forum, or OS Dev forum as smiddy
    • License: No License Information
    • URL: http://smiddyOS.asmhackers.net/
    • Status:
    • Unknown



  • Solar_OS - Simple, easy, fast 32bit GUI OS in ASM
    • Contact: bogdan_ontanu @@ yahoo -- insert the dot here remove under score in name -- com
    • License: No License Information
    • URL: http://www.oby.ro/os/
    • Status:
    • Unknown



  • SollerOS - A unix-based 32 bit operating system written in assembly-it has no connection to Solar_OS, the similar names are just a coincidence



  • spiderpig - 32 bit operating system written in C



  • Static OS - Foreign language OS Project



  • SubraX - Educational/Experimental Operating System with graphical interface support under Oracle VirtualBox. Whilst not yet usable it is growing relatively fast.
    • Contact: bobbyjo ( AT ) love2code.org
    • License: No License Information
    • URL: http://www.love2code.org
    • Status: -- As of February 2011, my a remote server automatically builds nightly and uploads to sourceforge mirrors weekly. Typically a change is made weekly.
    • Unknown



  • Sugatha RTOS kernel - Sugatha is an RTOS kernel with upto 8 priority levels. It is mainly written in C with the CPU specific code in asm.
    • Contact: dushara (nidujay AT sourceforge.net)
    • License: No License Information
    • URL: http://sugatha.sourceforge.net
    • Status: June 28, 2007 -- Sugatha RTOS version 0.8.0 (beta)
    • Unknown



  • SUNUX - SUNUX is aiming to be an networking OS for running web servers and DHCP server, etc.



  • SyCODE Platform - SyCODE Platform is (not yet but will be) a 32bit pmode OS (multitasking) with GUI. The executable format will probably the PE. I will port an assembler, a C compiler, a linker, and I will port a basic compiler (I am writing it for DOS, it will support many features ported from C language).



  • Synergy OS - Synergy OS is an operating system built for learning purposes. It's built from the ground up using only assembly and no C; nasm and GNU ld are required to build it. It currently has a 32 bit protected mode kernel and a keyboard driver. It's source is in the OS download



  • SysPak OS - SyaPak OS is a microkernel based multiprocessor, multitasking, multithreading operating system for the IBM-PC Intel i386 systems. It is developed in Department of Computer Science of Bahahuddin Zakariya University, Multan Pakistan, under the kind supervision of Dr. Aman Ullah Khan. SysPak OS is a operating system with an emphasis on design and portability. It is largely implemented in C/C++, with a small amount of assembly. Currently, the system is mostly a kernel with a minimal amount of user space libraries and applications. Thus far, most of the work has been put into the kernel and other underlying support. As a result the system isn't that interesting from an end-user point of view (no gui, simple commands on a command line). Full documentation is available.


T


  • Tabos - Tabos is a new operating system, at this stage of development aimed to run on intel's x86 platform. Although it is our first try in creating a runable, modern os, it seems that we are on the right way. We decided to develop a modular monolithic kernel with module loading support, using the x86 platform features to achieve this goal
    • Contact: Jan-Michael Brummer(jan.brummer AT tabos.org)
    • License: No License Information
    • URL: http://www.tabos.org/
    • Status:
    • Unknown



  • tachyon - tachyon is another hobby OS, longing to support x86 and x86_64. currently, it boots on both platforms in qemu, bochs, virtualbox and real hardware. it has not much to see, really, but a working physical and virtual memory managment (still improving)...



  • TappiOS - A personal pet project for learning basics of OS developement; creating everything from scratch from boot up (including bootloader, file system, binary format, etc...). The long term plan is to create a pure long mode microkernel operating system for fun an enjoyment.



  • TempOS - TempOS is an educational and multi purpose Operating System that was born as an undergraduate work and has it's your main goal to be not only another Operating System, but a complete toolkit designed to help students on their O.S. courses.
    • Contact: Renê S. Pinto (rene AT renesp.com.br)
    • License: No License Information
    • URL: http://tempos-project.org
    • Status: -- In active development
    • Unknown



  • The Damn Small OS - An Exo-kernel where the application builds the system it self, providing the most basical functions for a multi-tasking system. All the response is thrown to the application, let it manage, but protecting the resources. An extreme approach of Operating Systems, that should be highly portable. 100% in C.



  • the dr - It's a kernel for the IA32 architecture written in C and asm. It's based on the exokernel architecture but forks from it when simplicity can be gained.



  • The Spoon Microkernel - The spoon microkernel is my hobby. It's becoming a fully stocked microkernel and an operating system is being built around it. Please enjoy having a look, it's great for people to learn from.



  • Titanium Bonfire Operating System/32 (TBOS32) - TBOS32 is a flexible 32-bit x86 OS written in C with NASM and based on early parts of JamesM's tutorials.



  • TJI-OS - TJI-OS is a 32bit Operating System, i have decided to create. I have had much experience in Basic, HTML, Batch. I will have to learn C# or C++ to create this OS but i think it will be an interesting chalenge. Any ideas/ feedback let me know.



  • とあるOS (ToAruOS) - Work-in-progress 32-bit hybrid kernel with graphics support. Written in C. Supports pipes, shared memory, signals, POSIX-compliant file access (on PATA devices) and threading; userspace includes a windowed GUI environment with a limited toolkit.
    • Contact: toaru-l AT acm.uiuc.edu
    • License: No License Information
    • URL: http://github.com/klange/osdev
    • Status: -- Active development by lead developer only. Current development is focused on porting a toolchain to run natively.
    • Unknown



  • Tornado - The modular kernel.
    • Contact: Tornado Developers Mailing List(tornado-devel AT lists.berlios.de)
    • License: No License Information
    • URL: http://tornado.berlios.de
    • Status:
    • Unknown



  • Trion - A portable nanokernel-based OS.
    • Contact: Trion Developers Mailing List(trion-kernel-dev AT lists.sourceforge.net)
    • License: No License Information
    • URL: http://trion.sourceforge.net
    • Status:
    • Unknown



  • týndur - The microkernel-based community OS of the German OS development community Lowlevel.



  • Tysos - The type-safe operating system is a 64-bit multitasking microkernel written in C#
    • Contact: John Cronin (jncronin AT tysos.org)
    • License: No License Information
    • URL: http://www.tysos.org
    • Status: -- Ahead-of-time compiler is mostly complete, work has switched to implementing the kernel
    • Unknown


U


  • U-OS - A German OS Project
    • Contact: Jan Loebel(jan.loebel AT web.de)
    • License: No License Information
    • URL: http://uos.maep.de/
    • Status: -- 2005: Project was stopped
    • Unknown
    • The validity of this entry is questionable;
      WARNING! This URL Website is not in English.


  • UbixOS - It's Back :)
    • Contact: Christopher Olsen(colsen AT UbixOS.com)
    • License: No License Information
    • URL: http://www.ubixos.com
    • Status:
    • Unknown



  • udos: a micro disk operating system - udos is for PC/AT compatibles with legacy FDD.



  • UNEXT/os aka (You Next /Operating System) v8.1.b (c)2009 - c++ flat mode operating system by a.T.d

current features:

  • flat mode memory module up to 4gig's of RAM
  • fat 12,16,32 driver
  • ps2 mouse driver
  • multi tasking
  • as usual CLI is supported
  • XGUI (open desktop): VBE2,800x600x256 and more, windowing system, buildin script language for GUI application development (Basic like language)
  • support 40% of DOS API (aka int 0x20,0x21,0x33)
    • Contact: r_ed209 AT yahoo DOT CoM
    • License: No License Information
    • URL: [coming soon i hope coming soon i hope]
    • Status: -- 60% done
    • Unknown



  • Useless OS - The Useless OS is made entirely in ASM compiled with NASM. It is currently a 16 bit Real-Mode OS with a FAT12 filesystem. It has around 30 system calls and an ASM header for developing applications for the UOS. Applications can be developed in ASM, or with a BASIC compiler called UBASIC (Useless BASIC) that was programmed in FreeBASIC. The UBASIC Compiler takes BASIC code and translates it to NASM code which in turn compiles it to flat-binary or .COM applications. The way the UOS multi-tasks is more like task switching in real-mode. A GUI is currently being developed. Future plans are to write a 32 bit p-mode extender, then port the GUI to use it for better multi-tasking. Note that our website is under construction.
    • Contact: David Gutierrez (david dot primeproductions dot gutierrez AT gmail dot com)
    • License: No License Information
    • URL: http://www.uselessos.site11.com/
    • Status: -- [Version 0.1.10]
    • Unknown


V


  • Valix - The Valix Operating System is a managed-code operating system. Valix runs no userland binaries: instead, an object-oriented interpreter is built into the kernel. This offers superior security (the only binary the CPU is directly running is the kernel itself) and faster speeds compared to other interpreters, since time is not wasted with context switching between kernelmode and usermode. Valix itself is written in GCC C, C++, and FASM Assembly under GPLv3; source code available at http://gitorious.com/valix . x86 architecture. Example of interpreted code at http://valix.org/wiki/doku.php?id=code_examples
    • Contact: xvedejas and cfaust at #valix on irc.freenode.net, or xvedejas@gmail.com
    • License: No License Information
    • URL: http://valix.org/
    • Status: 2009, 2010, 2011
    • Unknown



  • VolTroX Operating System - Codenames Chronos And Aurora, Two 16bit real mode operating systems developed by two teams Aurora And Chronos, They are both fat12 compatable, and will contain vesa gui, with simple memory management
    • Contact: No Contact Information
    • License: No License Information
    • URL: http://gxp.yuku.com
    • Status:
    • Unknown



  • VSTa - VSTa is a copylefted system, originally written by Andrew Valencia , which uses ideas from several research operating systems in its implementation. It attempts to be POSIXish except where POSIX gets in the way, and runs on a number of different PC configurations. VSTa is also designed to take advantage of SMP right out of the box.


W


  • WISDOM - 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.


X


  • XOmB - General purpose OS built on top of the XOmB exokernel. Aims to do away with the legacy crap of x86 and utilize the features of x86_64 to their benefit. Devices as given to the user with the most minimal of abstractions. The kernel itself is multicore 64 bit only. It supports multicore scheduling, a userspace keyboard driver, a userspace VESA driver (through x86 emulation), and is actively developed by a group of undergraduate and graduate students.





  • X-OS - French OS Project
    • Contact: AlAdDiN
    • License: No License Information
    • URL: http://xos.freezee.org/
    • Status:
    • Unknown
    • The validity of this entry is questionable;
      WARNING! The website is down


  • Xenon - Xenon is (almost) a UNIX clone; I am not yet sure how it will be different, but there will be something :-) It aims to be small and fairly fast, but mostly it only exists to fill my time... At this point, the only fully working component is the crash handler. It is currently in C/NASM. License: MIT



  • Xenon - Xenon is a completely new breed of operating system inspired by Singularity, L4, Panda, and Vista. It combines software isolated tasks using type-safe code (C#) with a completely kernel free design that replaces the traditional kernel with a group of core services running in their own tasks. This design provides the best stability and security while improving performance. Xenon Software is my startup company that strives to think "nowhere near the box".



  • Xero MaLux - Xero MaLux, or MLX for short, is an operating system which is completely based on *nothing*. The aim is simple. Strive for efficiency in its purest form. It is written in C, later to be ported, and entirely developed, in ASM.
    • Contact: connorwood71 [at] googlemail [dot] com
    • License: No License Information
    • URL: http://xeromaluxdl.blogspot.com/
    • Status: -- Graphics, and basic Memory Manager working. Quasi-window manager.
    • Unknown


Y


  • yaMOS - yet another "My Operating System"


Z


  • Zen - Based on the principle that simple is beautiful.



  • Zephirum OS - An interpreted OS from v0.0.2 with extreme security. Originally it was aimed at being a POSIX compliant system, now it is no longer a unix based OS. Can perform parallel processing. Written in x86_64 assembly.



  • ZoftOS - ZoftOS is a Intel 80x86 based OS that **will** (subject to change) provide support for VFAT and ext2 with different executable file formats supported. Written in C/C++ (gcc) and assembly (nasm), unde Win/DOS using Bochs (for testing anyways). Main purpose __was__ to develop a smarter shell, that could recognize and learn different commands and shell scripting that's more flexible.
    • Contact: Ben Hsu(ben.sunghsu AT att.net)
    • License: No License Information
    • URL: http://zoftos.sf.net/
    • Status:
    • Unknown
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