Cairo Dock is an OS X like approach to alternative desktop environment. This tutorial will teach you how to install the latest version.
Installing
Installing via the terminal is rather easy.
sudo add-apt-repository ppa:cairo-dock-team/ppa
sudo apt install cairo-dock cairo-dock-plug-ins
Switching
Once you’ve installed Cairo, you may switch, with or without Unity/Gnome, and back again when you login, using the Gear icon to the right of your name.
Uninstalling
sudo apt purge cairo-dock cairo-dock-plug-ins