ChibiOS/RT is a free and efficient RTOS designed for deeply embedded applications. It offers a comprehensive set of kernel primitives and supports many architectures: ARM7, Cortex-M0, Cortex-M3, Cortex-M4, PowerPC e200z, STM8, AVR, MSP430, ColdFire, H8S, x86.
AiR-Boot is a x86 boot-loader that resides completely in track 0 of the harddrive. It‘s also independent of any OS, features a BIOS-like built-in setup, is localized to German, Dutch, French, Italian, Russian (including Cyrillic) and Swedish.
Project has been move to https://github.com/ciaa/Firmware
The project is not more active, we have fix a lot of issue and perform many improvements. These are now deliverd as part of a new project: https://github.com/ciaa/Firmware ---- FreeOSEK is a scalable solution for embedded system. FreeOSEK OS is based on OSEK RTOS specification (OSEK-VDX). visit us in: http://opensek.sourceforge.net
An open-source Phantasy Star Online server for *nix
Sylverant is an open-source server for the Phantasy Star Online series of games by Sega, written primarily for Unix-like operating systems. Sylverant has at least partial support for most versions of Phantasy Star Online, from the Network Trial for the Dreamcast through Blue Burst for Windows.
A new simple operating system
A basic operating system that can realize some basic functions. It is developing for educational purposes. It is being developed simultaneously with sslib, the Simple Standard Library for developers program no-OS apps, program NuOS commands or program an operating system.
Real-time, modular, microkernel-based operating system under development for i386. The first goal is to support 32-bit DOS protected mode applications made with DJGPP as well as native applications.
It is a minimal linux like kernel for x86 architecture. It is mostly the source code from the tutorial "Roll your own toy UNIX-clone OS" written by James Molloy: http://www.jamesmolloy.co.uk/tutorial_html/index.html It is encoded in a bash script.
Aquarium control system based on the Arduino platform
The intention of Aquaduino is to provide most of the required functionalities of commercial aquarium control systems based on the open source hardware platform Arduino.
PC boot package
Bootpack will be a PC boot package. Currently has an MBR bootsector ("mbr-bb") and a simple data-write tool ("putbin"). An assembler ("fas") and a partition bootsector ("pbb-fat32") are work in progress. Several pbb variants, a stage 2 loader ("ABC"), a 16 bit C compiler ("scc"), a boot-configurator ("BLA") will follow.
This project is an effort to develop open source software for all old platforms, like MSX, Commodore, AMIGA, Atari, ..... and collect technical information about old platforms, keeping the "old skool" flame alive.
AOSP-based Operating System (On phone tap on "Try to download anyway")
halogenOS test builds (release builds are just a leftover) The test builds and modules are supposed to be only used by our testers. But if you are not a tester, and use these builds anyways, don't expect support if you get problems. You can report the bugs, but you have to be experienced enough to know how to revert back to a working state and how to report bugs and provide logs.
(English) Emulator developed for the game With Your Destiny (WYD), by team EWC(Emulator Wyd Core), Software non-profit (free), GNU License. Contact email@example.com, Contributions are accepted. EWC project is Open Source.
LF OS is a little operating system written completely from scratch It supports multitasking and (later) multiuser. It is Multiboot-compliant, so it can be booted by GRUB. As Executable Format it uses ELF. At the moment, work is focused on the Kernel.
Aesalon is a program behaviour visualization tool. Instead of static analysis on source code or performance profiling, other aspects such as thread interaction, mutex/semaphore status, dynamically-allocated memory, and file/socket I/O are visualized.
AOEmu is a high performance server emulator for the sci-fi MMORPG Anarchy-Online. This project aims to provide a fully functional server system for running and maintaining an Anarchy-Online server over one or many server machines running Linux.
The CK 64-Bit Kernel Operating System
This project is a implementation of layers. Use Virtual machines & virtual adapters alike an onion! Another operating solution instead of Microsoft Windows Server operating system. It is to be used via remote controlling. The special new "Cktool32" will make it easy to handle *Ck64Krnl*.
A community project to develop a freeware dungeon keeper style game in the absence of an as yet forthcoming dungeon keeper 3 (nine years+ in the waiting)
Home-made operating system, developed in C and asm for x86 architectures.
An operating system written in C & assembly.
An operating system written in C & assembly. FruityOrange uses the concept of a monolithic kernel and GRUB as bootloader for the kernel and some modules. There is still no release. If you want do try the development-version, get the Sourcecode and build by yourself!
Display DOS version and OEM information.
GETVER is a simple tool to display DOS version and related information (like ROM flag and OEM name), that DOS reports it to DOS application. This tool was created because output of "ver" command sometimes didn't reflect what application really knew from querying DOS system. Especially on Microsoft Windows or non-Microsoft DOS systems.
An hybrid Win32/Linux/Mac Operating System.
Learn, Adapt, Store, Evolve, and Retrieve
LaserOS - Learn, Adapt, Store, Evolve, and Retrieve Operating System. A real-time, hybrid-kernel, fast boot, user friendly, intuitive, cross-compatible operating system, with an advanced machine learning core.
LogoROS is new object-oriented operation system (currently in early development). See wiki page: https://sourceforge.net/apps/mediawiki/logoros/ and development blog: https://sourceforge.net/apps/wordpress/logoros/ for more info.