Simplicity Linux is a Puppy Linux derivative with LXDE as the default desktop environment. It comes in four editions: Obsidian, Netbook, Desktop and Media. The Netbook edition features cloud-based software, the Desktop flavour offers a collection of general-purpose software, and the Media variant is designed to provide "lounge" PC users with easy access to their media.
Obsidian
Obsidian is our extremely cut down version. You get a browser, a network manager and the desktop. That is about it except for a few tools to help you set up the system.