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512DevOS is a GPLed operating system that runs on 16 and 32 bit x86 compatible computers. The kernel and shell fit in 512 bytes and occupy only the first sector of a floppy disk.1 weekly downloads
A little operating system created in order to discover the basis of the modern operating system in practice.
An Accounting Software like Tally in Java
A new advanced customizable graphic menu multi boot and OS loader based on XOSL project with gujin project features, this project integrate too a mini OS to provide certain customizable specialized maintenance tasks before boot partition/load OS target.
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 layer1 weekly downloads
A operating system designed to be compatable with the linux and uinx software, that is capable of running as a modern operating system.1 weekly downloads
This is an OS kernel for arm920t platform.1 weekly downloads
This is a kernel driver for the BCM5974 multitouch device, currently present in the Macbook Air and Macbook Pro Penryn mactel machines.
ArchOpen is a project aimed at providing a fast, light and free operating system and applications for portable multimedia devices based on TI DM&DSC chips. It currently supports a lot of Archos multimedia devices (Gmini402,AV400,...).
AOS is an Operating system based on DOS that is for use by advanced end users and has no GUI. It has a variety of functions and comes with many utilities useful for administrators. It requires a keytag number to login, these can be configured in code.
AxionOS is (to be) a operating system for the Axion Prototype Computer (APC) which is basically a notebook. Currently the project is in its childhood, but the idea is simple - To create an intuitive, user-friendly operating system for the APC.
BOS – B.lu operating System, is an operating system dedicated to small microcontrollers and CPUs without MMU. Actually is dedicated to Texas Instruments MSP430 microcontrollers (it can be ported to other CPUs without great changes)1 weekly downloads
Binary Automated Data Exchange Language (BADEL) ornate systems; kernels for BADEL chests, resorts/settlement codes, argument prompts, nests for FIN/POD, datelines, operating data and nomenclature claims. Requires SuperWikia Alpha Mainframe frameworks.
BLibrestez Robotics Software Library Project1 weekly downloads
BNL OS is a free, modern operating system based on the design of Windows XP/2003.This is not a Linux based system, and shares none of the unix architecture. Please remember, this is in the development stage, and is not reccommended for everyday use.2 weekly downloads
Barbux, the bearded people OS1 weekly downloads
Blueport is an italian Open Source 32-bit operating system ... This project has temporarly moved to Gna.org: <a href="http://gna.org/projects/blueport">Blueport project</a>1 weekly downloads
The BohOS Operating System is an OS based on μMPS machine (http://mps.sourceforge.net/), divided into six layers. Each layer provides an abstraction layer to the i+1 layer.1 weekly downloads
CJet eXTreme OS is a new project to develop a cross platform operating system with a native application interface designed to make it easy to develop for several architectures at once.
COS - Component-based Operating System1 weekly downloads
CapROS is an experimental capability-based operating system, based on EROS, KeyKOS, and Gnosis. Ports exist for the Intel IA-32 and ARM9 architectures.1 weekly downloads
This project is meant to increase the efficiency of Linux kernel 18.104.22.168 in cell Broadband Engine.This is in accordance to the IBM cell BE challenge-2.
Cerberus is an attempt at creating flexible and extremely customizable Operating System that can be used on many types of computer systems including desktops, servers, and embedded solutions.
A (new), Distributed and Supercomuting ready, Component Oriented Opperating System, together with a (special) toolchain to build it. (It will run on I386 networked machines initially)
CleanOS is an operating system developed for educational purposes, initially to be an userspace GNU/Linux application running its executables and simulating the operating system task scheduler and IPC mechanisms. Now it supports a true i386 kernel.