Microsoft's latest operating system for personal computers and tablets, featuring an A.I. assistant to help you manage your life
Google-based mobile operating system for phones, tablets and other devices
An older version of the popular Windows operating system that has since been upgraded repeatedly
A major release of the most popular operating system with Live Tiles and touchscreen optimizations
Server operating system that aims for 100 percent Red Hat package compatibility
Darwin-based operating system update for Macintosh computers that adds new features and accessories