1. The basic: Command + Q
It quits the app immediately!
2. Command-Option-Esc: It opens up a force click application window. Choose the application you want and click enter to force quit it!
3.Control–Command–Media Eject : Now you will want to use this if nothing else is working and your entire computer is frozen. What it does is it forces all apps to quit and restart the mac. If any documents have been unsaved, you'll be asked whether you want to save them or not.
Thank you for visiting, this was a very short blog post to help users in case they caught a glitch in an app and wanted to quit it.