Quick Mac Tip #003 - Alt Tab N' Quit If you've ever needed to quickly close a lot of programs, whether you wanted to clear up some system resources or speed up the shut-down process, you may have found it tedious to do so. To speed this process up you can take advantage of the command+tab shortcut which allows you to quickly switch between programs. While holding command+tab, it turns out you can access another shortcut: command+q. Command+q as you may already know quits programs. If you hold down the command button, you can quickly select programs you want to quit by alternating between pressing tab and then q, which is easy because tab rests right next to the q key.