An implementation of the Ext2 (Linux) filesystem for Mac OS X.
Labyrinth BSD is a stable BSD implementation intended for the average user.
Crosos is a SubLinux Distribution
Crosos is a open-source OS. It is based on the Linux Kernel and mostly uses the same code in Ubuntu (but it has been derived from Debian)
This project intends to develop an exokernel based OS incorporating concepts from the MIT exokernel, the Utah Flux Project, Elysium, L4 and Eros.
The goal of llama-X is to be a cutting-edge desktop operating system for the x86 architecture. A new object-oriented filesystem, and a fresh new desktop paradigm, and an innovative multikernel subsystem are main features of the system.
Tyros is a highly modular operating system aimed towards providing the unified interface between user-space applications and all types of system objects (i.e. threads, processes, users, computers, networks etc)
An easy to use installer that enables Mac OS X user to install and use linux on their HFS+ formatted iPods in addition to the Apple Supplied OS. Currently supports 1-4G, Mini, and Photo iPods. Installation on Nano and Video possible but not supported.
BSDStep is an open source BSD based distribution using code from the L4 Microkernel, DragonFly BSD, Cairo and GNUstep projects.
USRBAC is a kernel patch and userspace daemon that allows role based access control to be mitegated in userspace. The goal is to allow a secure way to impliment RBAC compliant security systems using a daemon in userspace
Yarrwin is a fork of Apple's Darwin, created with the intention of simplifying creation of Darwin-based distributions and addition of novel software features to the Darwin platform.
Operation system FreaxOS
DoubleCommand is a Mac OS X kernel extension that allows you to map keys on your keyboard to the way you want them.
Turtle OS is an Unix-like OS. It aims to be open source, secure, high performing and portable.
OpenHost OS is committed to providing anyone a free (speech), modern, and secure computing solution. I use all free software to this end excluding OpenSSL. Advanced packages for home and business users are continuously being added to the repository.
The Darwin Source repository is intended to fill a void left by the closure of the OpenDarwin project: providing a permanent and public repository for the open source components of Mac OS X.
The NeXT IRIX or maybe MacOSX. Eventually to be based on the open-source core of OSX, Darwin. Using the free implementation of OpenSTEP, GNUstep for its desktop and application environment, this WILL be the NeXT multimedia powerhouse.