Spaces, the virtual desktop manager, makes it good. A few years ago, multiple desktops were accessible with a 3-finger swipe left or right. Now, when you make an app full-screen, it creates a new space to contain the app, so multiple full-screen apps are easily accessible.

Linux has a virtual desktop manager, and Windows has some 3rd-party apps that provide multiple desktops. None of those apps seem as tightly integrated and useful as this Mac OS feature.