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.
Desktop
With desktop, you get a lot of things like VLC, Skype, LibreOffice. It's a full blown distro. If you want something more fully featured, this is the version you want to download.