Ubuntugeek shows you how to install Cinnamon desktop in Ubuntu 14.04 (Trusty)

Cinnamon is a GTK+ 3-based desktop environment. The project originally started as a fork of the GNOME Shell, i.e. a mere graphical shell. Cinnamon was initially developed by (and for) the Linux distribution Linux Mint.

Because the Cinnamon desktop environment intends to implement a different graphical user interface (GUI) than GNOME desktop environment, many of the GNOME Core Applications were forked, so that their GUIs can be rewritten appropriately.

  Install Cinnamon desktop in ubuntu 14.04 (Trusty)