One of the many new features in Mac OS X Lion is the new Launchpad utility. Launchpad allows you to gain access to all of your apps quickly by showing an overlay on the screen with several different icons. You can organize the icons into different catagories such as "Music" and "Photography." This way, all of your apps are just a click away on your Mac computer!
Have an iPhone? Check out all 200+ new features coming in iOS 13.