Internally, Apple engineers rely on a dedicated app to view, manage, and toggle in-development features and user interface elements within pre-release versions of new operating systems. Here's what ...

An operating system is the essential software that's needed to run your computer's suite of software. Everything from video ...

When we talk about computers -- PCs, smartphones, cars -- we generally assume that there's just one operating system: A single, monolithic piece of software that manages each individual piece of ...