Exton|OS

http://linux.softpedia.com/get/Linux-Distributions/Exton-OS-103366.shtml#download

Exton|OS is an open source Linux distribution built around the lightweight MATE desktop environment and based on the world’s most popular free operating system, Ubuntu. It also provides users with a light version that features the very fast and lightweight Openbox window manager, as well as a Kiosk edition with Fluxbox.

Distributed as 64-bit Live CD/DVDs

The project is distributed as Live CD/DVD ISO-hybrid images with persistence mode, which means that it will allow users to save all the settings and files produced or downloaded during live sessions (only supported on USB flash drives). It comes with its own installer, replacing Ubuntu's one (please take a look at this slideshow for detailed information about the installation process). The Light edition of Exton|OS fits perfectly on a CD disc (detailed instructions on how to burn the image to a CD can be found on the project's homepage).

Three editions are offered, with MATE,  Openbox and Fluxbox graphical environments

As the developer describes on the product’s home page, the distro is untroublesome and fast. This is mainly because of the MATE desktop environment, a fork of the classic GNOME 2 window manager. On the other hand, the Light edition is suitable for low-end machines with no more than 256MB of RAM, thanks to the Openbox window manager. On the other hand, the Kiosk edition uses the ultra light and fast Fluxbox window manager.

Borrows features from Debian 8

Besides the Ubuntu base, Exton|OS also borrows some features from for forthcoming Debian 8 Jessie, as well as Ubuntu 15.04 (Vivid Vervet) and uses a custom kernel based on the upstream Linux 3.19 kernel (for the Openbox edition) and 4.0 kernel (for the MATE edition).