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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.
CGNU (Clean GNU) aims to use modern documentation technologies to clean the GNU project of bitrot and outdated build technology.
The cc3 project provides software for embedded vision systems. Currently, the software runs on the CMUcam3 hardware platform, which is a NXP LPC2106-based board with an onboard CMOS camera and FIFO, MMC interface, serial UARTs, and servo controller.
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.2 weekly downloads
A shareware game called begin was released in 1984: a tactical starship game with a good AI and fair rules (the computer had no advantage) I've hacked assembly code to make it a multiplayer game, so that folk can challenge each other rather than the AI.3 weekly downloads
Aurora OS is an operating system designed in a microkernel format for all users. The object is to develop a modular, mulitplatform, multitasking Operating System that is simple, effective, and powerful.
StrikeRange is an Appliance OS designed exclusively for 64-bit multi-core processor architectures. It is derived from BSD kernel and OpenSource software libraries.
Aicix is hobby Operating System (OS) of me. It won't be as big as Linux distributions are.
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.35 weekly downloads
CMON51 is a monitor for the 8051/8052, written in C and assembly.7 weekly downloads
tOfuS is an OS kernel with framework capabilities, in order for everyone to experiment on it. (was: A Music-Production oriented Operating System, for use in recording studios and live performances as a mixing desk and user-programmable DSP).1 weekly downloads
WGCC has been superseded by parity (http://www.sf.net/projects/parity). Please use parity for new projects!1 weekly downloads
MVDSV (MultiView Demo Server) - most popular QuakeWorld Server in the world with it's ability to record every player's point of view in a server side demo. Includes: mvdsv, qwdtools (demo tools), qwdplayer (client - removed, use http://ezquake.sf.net).7 weekly downloads
Mattise is a simple hobby operating system designed to run fast on 32-bit PCs. A newlib port will be released soon for developers to write their own programs for Mattise.1 weekly downloads
SangMyung Univ. Graduate Project Project: MyRTOS Team name:Software Craftsmanship Description: pxa255 based RTOS. Preemptive Multi-threading,Priority-base,Round-Robin Scheduling, Thread, Semaphore,Message Mail Box,Message Queue Management Support.1 weekly downloads
HyenaOS is a new operating system kernel using UNIX-like OS model, which would be developed in C and assembly for the intel IA-32 architecture of processors. It provides clean code and priciple implementation in our own mind, not refering to existing OS.
An effort to port the GNU Hurd system to the iPod.
GrindarsOS - 32bit protect-mode one-task operating system.10 weekly downloads
HelenOS is a multiplatform microkernel-based multiserver operating system designed from scratch. HelenOS does not aim to be another clone of Unix or some other legacy system and is not POSIX-compliant (even though it may seem POSIX-similar at times).1 weekly downloads
A free replacement firmware for the T/S 2000 derived from the T/S 1000 ROM.1 weekly downloads
A little operating system named sonanos, which can run on i386 and ipod. Is is developed just for fun.
Story OS is a small microkernel system with object-oriented service interface.
Replace a Vehicle Wiring Harness with a simple CAN network and unified power distribution. Based on ATMEL AVR microcontrollers and Microchip MCP25050 CAN I/O expanders.
Cryptofon - a safe phone with integrated encryption.
Pearwin is a unix like operating system, written in C, C++, Assembly, and other languages. This is a hobby/home OS, designed for home use, but can be professional (if you can find an application!).