Cinnamon is a desktop environment based on GTK+ 3. Cinnamon is also one of the Desktop Environments that comes ship with Linux Mint, In Ubuntu Cinnamon is a regular package that has to be installed manually by the user and does not ship with it. Cinnamon that ships with Linux Mint is tweaked by the Linux Mint Team and comes with all the Cinnamon packages and extra packages too, On the other hand in Ubuntu Cinnamon is a package that comes with it’s panels and default theme, Cinnamon also is very easy to use and customize. The latest version of Cinnamon can be installed using a PPA.
Adding ppa to the local package repository database.