|OSDescription=A small public-domain OS, based on the 'nanos' nanokernel.
|OSDescription=A small public-domain OS, based on the 'nanos' nanokernel.
|Contact=
|Contact=Andy Elvey
|URL=https://github.com/mooseman/plan_42/
|URL=https://github.com/mooseman/plan_42
|Status=Last update in November 2014
}}
}}
Revision as of 19:32, 17 November 2014
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.
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”. See also: Oberon Operating System on Wikipedia and Lukas Mathis' Blog: Ignore the Code.
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.
The Apollo project is a microkernel designed for maximum portability. Closely following the UNIX Philosophy without being unix itself. The Project has been active for about 6 years, with about 8 complete code rewrites along the way.
June 15, 2014 -- Alpha Testing of Code rewrite. No functionality to speak of other than VGA output.
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.
-- Stuff from kernel to big stable programs present, but hardware support is lousy. Continually developed.
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 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.
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.
The validity of this entry is questionable; Not updated since 2009, unmaintained
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.
The validity of this entry is questionable; No releases, it's just site with few pages of text about their "operating system"?
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.
no source code manipulation since 2005 (just some patch in 2010), but SourceForge page has last update in 2013
The validity of this entry is questionable; Not developed since 2005
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 Protected/Long mode and ARM compatible OS with multitasking support. The ARM port is in its early infancy and is designed to test portability and to run on the Raspberry Pi. Since Caracal has started using GRUB2, CBoot, the bootloader has been abandoned. As with a lot of these hobby OSes, I have a lot less time to spend on Caracal than I would like!
July 3, 2013 -- Caracal Kernel is early alpha. CBoot has been abandoned in favour of using GRUB2.
Cédille
Cédille is a microkernel that attempts to be just that - a kernel with barely anything in it so it doesn't screw up. It boots via Grub and is inspired by Mach and Linux.
last update on April 15, 2013, but still no releases
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.
Pype & the Clicker Development Team(pype_1999.geo AT yahoo.com)
The validity of this entry is questionable; Source code isn't modified since 2006, possibly unmaintained
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.
Coyotos is a multiprocessor successor to EROS that corrects a number of things that were learned from the EROS effort, among them that kernels really shouldn't be written in C++ for overhead and complexity reasons.
Coyotos is a secure, real-time, capability-based system that runs on embedded IA32 and Coldfire systems, and was deployed in commercial embedded applications. Work on Coyotos halted in 2009, but the website and source code continue to be maintained. The Coyotos source code may be of interest for the fact that it is well documented and exploits ELF linking capabilities for a number of unusual static initialization techniques. For those building non-UNIX systems, it may also be worth looking at the system image construction tool, sysgen. A successor to Coyotos is currently on the drawing board.
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.
Crocos is currently a multitasks system embedded inside one Linux process. It supports read operations on an ext2 file system.
The validity of this entry is questionable; No development progress since 2009
D
d264b
A rewrite of Dreckig OS in 64-bit assembly language. Uses the same principles and technology from Dreckig OS including the megalithic kernel architecture. Currently in early stages of development.
Alpha - Active Development, last action in July, 2014
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.
The validity of this entry is questionable; No development progress since 2007, abandoned
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.
Drako is a new operating system that start from scratch. It is based on 'abstract processor' concept that Drako will map on the real machine, at the moment the mapping is on x86 architecture.
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.
started in January 2013, no real progress since March 2013
Dux
Dux is an i386 Operating System with an interactive kernel debugger and module loading capabilities. It was started in 2008, and has been mostly unmaintained since 2012.
The validity of this entry is questionable; No development progress since 2006
E
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.
The validity of this entry is questionable; No development progress since 2011
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. - The CapROS operating system is a fork of EROS. EROS has since been superseded by Coyotos.
Jonathan S. Shapiro (shap A.T eros DASH os D.O.T org)
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.
The validity of this entry is questionable; No development progress since 2011, previous versions were released every year
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.
The validity of this entry is questionable; No development progress since 2004
Fling OS
Fling OS is a reference operating system with full technical documentation and aiming to have full reference and tutorial articles on every aspect of the code.
August 24, 2014 -- 2nd release. Stable core kernel including USB 2.0 drivers.Active, Looking for developers, 2 versions released, Kickstarter project ongoing
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.
The validity of this entry is questionable; No real development progress since 2010
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++.
The validity of this entry is questionable; No development progress since 2010
Fudge
Fudge started as a project to see if it would be possible to create an operating system that came as close as possible to be fully deterministic by not implementing solutions with unpredictable behaviour like dynamic memory allocation, scheduling and caching.
The validity of this entry is questionable; No development progress since 2008, abandoned
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.
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).
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.
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.
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.
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).
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!
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.
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.
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 is small and simple operating system. It will be written in assembly language and C. The main goals: Portability, Stability, Security and Customizable.
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.
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).
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.
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 ;)
Wojciech Komorowski aka GigaWolf(gigawolf AT hotmail.com)
JS-OS is a 32-bit operating system, written mostly in C, that is aiming to become a UNIX-like clone, but with some added/better capabilities. This project was started in late 2012 by a high school student and is meant to be a learning/research tool for both the developer and the user. The code is mostly commented and not too difficult to follow.
Using this operating system is meant to be easy and very intuitive. It is currently under development and supports preemptive multitasking, interrupts, an ext-2 clone file system (supporting up to 16GB files), a bunch of file system utilities, a basic shell, a dynamic heap, memory protection, a 32bpp VESA VBE and a VGA driver, a window manager, keyboard and mouse driver, and a sound driver.
April 20, 2013 -- JS-OS Version 0.0.1 stable; actively being developed
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.
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.
Julien Munier, Thomas Petazzoni, David Decotigny(thomas.petazzoni AT enix.org)
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.
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.
KnightOS
Open-source operating system for Texas Instruments calculators. Features preemptive multitasking, memory management, etc, for 9 different calculators. Written in z80 assembly.
Kernel is nearly mature, missing full support for writing files. Userland is very minimal and needs work. Contributors welcome.
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.
Kernel has working interrupt handlers. Ongoing is the design process for the Re-entrant memory allocator, Kernel Re-entrancy and Subsystem Re-entrancy.
Kosar OS
Sample x86 OS with farsi support. Non-english homepage.
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
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 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 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.
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.
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 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.
February 18, 2009 -- Version 0.0.2. Still very basic pre-alpha. Implemented proper I/O functions. Next release: Advanced Output, Memory Manager.
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.
Manish Regmi(regmi_manish AT gmail.com), Rajesh Bikram R.C. (rajesh.rc AT gmail.com)
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.
Matthew Iselin (pcmattman AT users.sourceforge.net)
April 1, 2007 -- basic C-only version of the kernel, without paging or newlib; basic binary file loader
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 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.
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 aims to be your mithril compass, that is, a device powerful in determining what is worth and what is not worth doing, in determining when it is the right time for doing so and also on doing the things it can do, without taking up your time.
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.
-- With huge time gaps developed since 1997 but so far no release available to public.
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.
Pascal Smit(smitpascal AT gmail DOT com)
No License Information
No URL
Unknown
-- Not Yet Releasd
MikeOS
A hobbyist 16-bit x86 OS with rudimentary DOS compatibility that boots from a single floppy disk.
"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.
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.
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).
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.
Version 1.0 released and a group of people driving it forward on a daily basis instead of being a one-man project
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.
-- 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)
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).
2013 -- The OS is currently pre-alpha - there are no official releases yet. However, nightly builds, source code and documentation are available.
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.
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)
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.
NukeOS is a hobby OS, currently being written in C and Assembly
charlie@ricchio.com
No License Information
[None yet =3 None yet =3]
Unknown
Not even past the bootloader stage =D
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.
2.3.6 hibernating/orphaned (last changes in the alpha of 2005, some more stuff in SourceForge)
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.
Anthony Lineberry (anthony.lineberry AT gmail DOT com)
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.
This project aimed at cleaning up the mess that desktop OSs have become, going back to a simple, lean and evolutive state. It also tried 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 aimed at improving the quality of the everyday desktop user experience through increased reliability, better consistency in the user interface, simpler interaction models, lower annoyance...
The first attempt didn't work, however. Perhaps development will start again in the future, but for now the project has been put in hibernation.
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.
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.
OZone is a suite of projects targeted at various platforms, all using the same XML based programming language. This is accomplished by enumerating any platform specific values or constants in an XML document, and using that document to generate the schema and transform documents needed to convert any references to those elements into their underlying value. The project includes platform definitions for Intel, AMD, IBM, Microsoft, .NET, Java, Nintendo, Raspberry Pi, Commodore, Atari and more.
The validity of this entry is questionable; No web site (August 2013)
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.
Paul Edwards - main author: fight.subjugation@gmail.com
-- 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.
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.
Monolithic OS with several backends supported - x86, x64, MIPS32, ARM and PowerPC. Kernel written in C++ with the obvious bits of ASM. Offers a reasonable amount of POSIX support and a tiling GUI and can run Apache, DOSBox, and various other common programs. Planned to also offer a native API alongside POSIX for Pedigree-specific applications.
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.
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.
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.
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A simple kernel created for educational purposes. A great care is put on keeping the code as readable as possible. PrettyOS is written in C and some i386 assembly (own bootloader). PrettyOS offers network, FAT12/16/32, uhci, ohci, ehci, xhci.
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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.
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.
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.
0.3.13 - Alpha Stage (Not recommended for everyday use)
Reaver Project OS - Rose
Open source project striving to provide a µkernel and a set of necessary services. Written in modern C++, currently targeting AMD64 SMP systems. Not POSIXish. Timer framework, IPI framework, thread switching are finished. There's also a basic, dumb scheduler without wait queues. Work progresses on enabling userspace and basic syscalls.
Retro OS is a simple os, it has simple cooperative multitasking, x86 architecture, loads binary programs from the ramdisk (in kernel-mode), very simple (but functional) drivers, and a megalithic kernel
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.
Version 0.1, working shell, under alpha development.
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.
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.
Designed in Cambridge, England by Acorn. First released in 1987, its origins can be traced back to the original team that developed the ARM microprocessor. Niche community using emulation, legacy systems and newer ARM hardware such as the BeagleBoard. "Shared source" fork (Castle Technology Ltd's RO 5) available for free non-commercial use, proprietary fork (RISCOS Ltd's RO 4 & 6) closed source.
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.
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.
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.
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.
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.
Regularly patched. Not currently under active development, but may be rekindled in the future.
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.
Working on 0.2 (Better resource locking, new userspace system, dynamic linking, priority schedulers, networking)
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.
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.
Sortix is a small Unix-like operating system developed since 2011 with emphasis on cleaning up traditional Unix design mistakes while retaining compatibility with third party software. Much third party software has been ported to Sortix and the system is now self-building. The Sortix kernel, standard libraries, and most utilities were written entirely from scratch.
Educational/Experimental Operating System with graphical interface support under Oracle VirtualBox. Whilst not yet usable it is growing relatively fast.
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 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
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.
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)...
A 32bit x86 OS written in assembly featuring a protected mode driver for USB flash drive and mouse. Source package includes tedit editor & ttasm assembler. Supports UHCI, EHCI, ps2 keyboard, 800x600x8bpp graphics.
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.
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.
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.
32-bit modular kernel written in C. Supports pipes, shared memory, signals, POSIX-compliant file access and threading. Heavy focus on advanced GUI, including a compositing window system.
Toast! is a the continuation of the discontinued Jaspos. It is being written in C and x86 Assembly, but is just taking its first few steps as Jaspos' code is pulled through.
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)
r_ed209 AT yahoo DOT CoM
No License Information
[coming soon i hope coming soon i hope]
Unknown
60% done
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.
David Gutierrez (david dot primeproductions dot gutierrez AT gmail dot com)
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
xvedejas and cfaust at #valix on irc.freenode.net, or xvedejas@gmail.com
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
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.
Simple multitasking x86-64 kernel written in assembly language. Started since 1 January 2013. Name of operating system means "pack of" eg. wolfs/boars/lycaons. Kernel name: Cyjon (eng. Dhole).
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.
The validity of this entry is questionable; The website is down (August 2013)
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".
XEOS is an experimental 32/64 bits Operating System for x86 platforms, written from scratch in Assembly and C. It includes a C99 Standard Library, and aims at POSIX/SUS2 compatibility.
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.
Graphics, and basic Memory Manager working. Quasi-window manager.
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.
wolfwood or untwisted or wilkie or steveklabnik(on the forums)
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 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.