Slingscold is a nice application launcher for Linux. In Ubuntu system with Unity desktop, we already have Dash launcher which is used to access all installed applications. But for some people like me, I hate Dash and need something simpler. Slingscold is the answer.
See Slingscold in action. Picture grabbed from noobslab.com.
sudo add-apt-repository ppa:noobslab/macbuntu
sudo apt-get update
sudo apt-get install slingscold