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.
Tynix is a real-time kernel for embedded systems with reduced memory availability (without external memory). The project intends to be very small, portable for a large amount of platforms and easily configurable.
Crossplatform FrameWord writen for oberon
A port of the Linux operating system kernel and assorted userspace to the Nintendo Wii.
Projeto de um backport para ser utilizado para os mais diversas necessidades como execução de comandos remotos sem ter que utilizar um servidor ssh por exemplo.
Customize Kernel 64-Bit Operating System
An Open Source Solution usable instead of Microsoft Windows. The ck64os enables server operating system tasks but is downgradable to an End-User software distribution for Tablet-PCs. It's Microsoft Windows application programming interface compability bases on incorporated virtualization layers.
crowOS aims not to be a big, wide-spread OS, but only a sort of hobbie-OS of mine, mainly for fun and to learn more about what is going on "under the hood". For now, it will be based on the x86-architecture, written mainly in C but also some Assembly.
An alternate and minimalistic boot rom for Lisa(s) emulator(s) (or maybe for real hardware in some future...)
Simple 32/64bit mode OS. Paging, handling exceptions IRQ INT, Basic: PIC/APIC, PCI, kbd, ps/2 mouse, ata. Thanks to wiki.osdev.org and (in alphabetical order): Kicer86, milyges, Nevar, webczat, Wojtulas. (IRC freenode #osdev.pl)
This SF project provides all the necessary source code to create and update a non-representative democracy, i.e. an isocracy. This is the software part of the melting-vote project.
Linux for Media Receivers
Trying to run Linux on a T-Home IPTV Media Receiver
open source analogue of IBM OS/2 operating system
The ppcOS is a hobby operating system.
A little operating system named sonanos, which can run on i386 and ipod. Is is developed just for fun.
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).
A portable BASIC in the style of Microsoft 6502 BASIC (especially the Apple ][+ variant), with influence from GW-BASIC and Atari BASIC among others, with enhanced features, written in C for portability to computers large and small.
xbos is designed to be a way to duplicate xbox games. it works by copying the xbox game disk onto the hard drive, and then burns that data back onto a blank DVD, thus creating a duplicate of the original game.
yaMOS stands for: yet another "My Operating System". This is a hobby Operating System, let's see to what it develops... At the moment it's only a kernel written in C++ and Assemly.