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.
A Simple 'IDE'A for Linux Kernel Developers
LinK+ IDE is a simple IDE for Linux Kernel Developers and Lovers. It is based on Eclipse IDE customized for Linux kernel programming. It reduces the development time and executes code in an elegant fashion. This IDE supports Linux kernel configuration, compilation & emulation, system call development and device driver development. LinK+ IDE includes various templates in the category of character, block and network device driver subsystems for device driver development. It includes various bus infrastructure templates and also provides Linux device driver code completion, code assistance & code navigation for developers. Download - LinK+ IDE for 32 & 64-bit architecture : https://sourceforge.net/projects/linkplustest/files/installers/ LinK+ Update Site (compatible with Eclipse IDE v3.6.x ): http://sourceforge.net/projects/linkplustest/files/repository/ User Manual: http://sourceforge.net/projects/linkplustest/files/documentation/LinK%2B_UserManual_Rev4.pdf
Free operating system for Atari computers, and more.
EmuTOS is a TOS compatible operating system for Atari ST series computers, and more. It is made from Digital Research's GPLed original sources and is a free and open source alternative to Atari proprietary ROMs.
Tool kit for building highly secure special-purpose operating systems
The Genode OS Framework is a tool kit for building highly secure special-purpose operating systems. It scales from embedded systems with as little as 4 MB of memory to highly dynamic general-purpose workloads. Genode is based on a recursive system structure. Each program runs in a dedicated sandbox and gets granted only those access rights and resources that are needed for its specific purpose. Programs can create and manage sub-sandboxes out of their own resources, thereby forming hierarchies where policies can be applied at each level. The framework provides mechanisms to let programs communicate with each other and trade their resources, but only in strictly-defined manners. Thanks to this rigid regime, the attack surface of security-critical functions can be reduced by orders of magnitude compared to contemporary operating systems.
Generic SCSI target subsystem for Linux SCST allows creation of sophisticated storage devices. It includes generic SCSI target core with SCSI target drivers and backend handlers. There are target drivers for iSCSI, Fibre Channel, SRP, SAS, FCoE, etc.
freeRTOS for Arduino Uno, Goldilocks 1284p & Mega 2560
AVR ATmega port of freeRTOS A port of freeRTOS which can be flexibly flexibly configured use almost any available Timer on AVR ATmega devices and will operate with almost any classic Arduino device from Arduino, SeeedStudio, Sparkfun, Freetronics or Pololu. Going forward this repository will be updated less often and only with major releases. Please check at Github for the latest commits. https://github.com/feilipu/avrfreertos The Goldilocks Analogue story is told here. http://feilipu.me/?s=Goldilocks+Analogue The Goldilocks 1284p story is here. http://feilipu.me/2013/03/08/goldilocks-1284p-arduino-uno-clone/ If this repository is too complicated to get started, a minimum AVR freeRTOS configured using the Watchdog Timer and Heap 3 is also also available. https://github.com/feilipu/miniAVRfreeRTOS For the Arduino platform there is a freeRTOS Library available in the Arduino IDE Library manager. https://github.com/feilipu/Arduino_FreeRTOS_Library
Haiku is an open-source operating system currently in development designed from the ground up for desktop computing.
Nucleus is an Operating system Kernel that is totally different from Linux and Windows. It is easy to understand and implement. It will have native support, small architecture and full VGA support (no text mode).
The OpenSSI project is a comprehensive clustering solution offering a full, highly available SSI environment for Linux. Goals for OpenSSI Clusters include availability, scalability and manageability, built from standard servers.
Custom firmware and IDE for the VEX Cortex Microcontroller
This project has been moved to http://pros.cs.purdue.edu/ PROS is a lightweight and fast alternative operating system for the VEX Cortex Microcontroller. It features multitasking, low-level control, and Wiring compatible functions to harness the full power of the Cortex. With a real-time kernel based on FreeRTOS and a development environment built on Eclipse CDT, PROS uses proven software to increase the reliability and usability of the VEX development system across all three major computing platforms. PROS is currently under active development to make it usable for VEX high school and middle school teams. PROS is intended for advanced VEX users seeking to move beyond competing environments. Eclipse and FreeRTOS have their own licensing agreements. Please see http://www.eclipse.org/legal/epl-v10.html and http://www.freertos.org/a00114.html for details.
Infortus is a hobby OS. It's written in C and Assembly.
With this project I intend to write a really, really simple OS, just for fun and learning. I think I will never have a really usable version, as I said, that's no my objective.
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.
Clicker is a project for a Multitasking Open-source operating system written from scratch. based on a modular micro kernel. We want to explore new way of designing and using OSes :) [newz: PCI, NE2K and VBE]
A simple operating system (not necessarily small). I try to implement standards like the standard C library. This product includes software developed by the tyndur Project and its contributors.
Agnix is an educational, network operating system kernel. It is ideal starting point to learn about operating systems. The main goal of the project is to provide a network kernel fully compatible with the Linux Kernel in the system call layer
A base for programs. Includes algorythms for Q-learning and SOM's etc. too. Examples: Hamron: Simulates evolution, uses the 2D-renderer. DriveUnit: created for school, for a robotic arm, uses the 3D-renderer. Hlearn: http://www.sagenb.org/home/pub/8
uSmartx is a non-preemptive, multitasking, priority based kernel for use in embedded designs. Its major features are task and time control over system resources, inter task communication and simple memory management.
This is an Mini Operating System for intel protected mode. This OS is written to understand OS concepts such as paging, VM, multitasking, Interrupt handling. This project is mainly done for educational purpose.
Operating system project from scratch to design and implement all components from boot strapping,hardware interrupts , memory manger ,file system , etc .
Caracal Boot Loader (cboot) is a second stage boot loader which takes over from GRUB (or other multiboot compatible loader) and prepares the system for your higher-half kernel. It now also includes VESA mode setting support.
FreeWPC is a software framework for writing new software for 1990's Bally/Williams pinball machines. The framework allows you to build your own ROM images, define your own game rules, incorporate dot matrix animations, design lamp shows, and so on.
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!
OSNOS (Open Source Network Operating System) is an operating system desigend to meet the needs of small to medium networks. It will support server based applications, and will handle routing of packets through the network, and support multi-user logins.
ZeX/OS - operating system