RedHat has always been a very cool case. They've managed to build on the Service model everyone was trying back in the 90s and succeed. They've had to focus on

RedHat has always been a very cool case. They've managed to build on the Service model everyone was trying back in the 90s and succeed. They've had to focus on the enterprise because of this while many have tried to do so for the desktop and failed Ubuntu is the last one I can think off which is attempting to do this for the desktop. Ubuntu One is an interesting attempt.