There are four main computer operating systems: Windows, macOS, ChromeOS, and Linux. Many of these have been around since the invention of the computer, but ChromeOS is a relative newcomer. ChromeOS is the operating system that powers all Chromebooks, including the best Chromebooks. Since Chromebooks are newer than Windows or macOS devices, many people are unsure what they do. This article looks at what a Chromebook is, what it can do, and its limitations.