Ubuntu 12.10 or later with NoMachine 4
Xfce, LXDE, Enlightenment, and Razor-qt:
http://www.renewablepcs.com/about-linux/kde-gnome-or-xfce
GUI for ubuntu server: xfce or xubuntu-desktop
http://askubuntu.com/questions/305646/gui-for-ubuntu-server-xfce-or-xubuntu-desktop
Uninstall Gnome completly from Ubuntu 14.04 LTS
http://askubuntu.com/questions/462163/uninstall-gnome-completly-from-ubuntu-14-04-lts
http://askubuntu.com/questions/452411/revert-from-gnome-3-to-unity
Ubuntu 12.10 or later with NoMachine 4
https://www.nomachine.com/AR07K00676
NoMachine (free version) Installation Guide
https://www.nomachine.com/DT09K00056&documentName=