Live Voyager 14.04.04

                                http://voyagerlive.org/
Live Voyager is an open source distribution of Linux based on a special edition of the highly acclaimed Ubuntu operating system that uses Xfce as its main desktop environment. It includes the same stable and reliable base as Xubuntu and on top of that various tweaks and additional software.
It's distributed as Live DVDs for 32-bit and 64-bit architectures

The distribution is available for download as Live DVD ISO images, one for each of the supported hardware platforms (amd64 (64-bit) and i386 (32-bit)), that can be deployed to USB flash drives using Disks or UNetbootin apps, or burned to DVD discs using any CD/DVD burning software.
Boot menu options

Except for the fact that it uses a different background image, the boot prompt of the Live DVDs is identical with the one used by the Xubuntu Linux operating system, allowing users to try the distribution without installing anything on their computers.

In addition, users can boot an existing operating system installed on the first disk drive, run a memory diagnostic test, check the disk for defects (only if using a DVD media), as well as to directly install the system, without testing it (not recommended).

Productive and modern desktop environment with a dock