Elementary OS Luna (fourth release), 32 bit

Elementary OS is a Linux distribution based on Ubuntu. It makes use of a desktop with its own shell named Pantheon, and is deeply integrated with other elementary OS applications like Plank (a dock), Midori (the default web browser) and Scratch (a simple text editor). This distribution uses Gala as its window manager, which is based on Mutter. The distribution initially started as a set of themes and applications designed for Ubuntu which later turned into its own Linux distro. Being Ubuntu-based, it is compatible with its repositories and packages. It uses Ubuntu's own software center to handle installation/removal of software, though its own software center is in the making. Its user interface aims at being intuitive for new users without consuming too many resources.(Wikipedia)