Quitting apps on your Mac. Although you could technically leave all your apps open in the background due to the macOS power efficiency abilities, quitting your unused apps is a good idea if you’re not going to need to use them again for a while. MacOS Catalina gives you more of everything you love about Mac. Experience music, TV, and podcasts in three all-new Mac apps. Enjoy your favorite iPad apps now on your Mac. Extend your workspace and expand your creativity with iPad and Apple Pencil. And discover smart new features in the apps. Six Ways To Learn How To Force Quit Mac Programs. I have collected these useful ways from Internet and make this article to help you find out how to force quit an application in Mac OS X, with keyboard shortcuts, your mouse, Apple’s menu or Terminal. The next best way to force quit an app in macOS is by using the Apple Menu. You can open the Apple Menu using the keyboard shortcut Command+Option+Esc. Next up, select the app in the Force Quit window, then click Force Quit.