Force Quit an Application in Mac OS X

Any unsaved application data will not be saved once an application was forced to quit. Do it only if necessary.

When to force quit an application? Only when its unresponsive and cannot be quit in a usual manner.

How to force quit?

1.) By pressing Command, Option and Escape at the same time. It will give you the interface below.

Choose the application you want to force quit.

2.) By clicking Force Quit found at the Apple Icon at the top of the screen.