Microsoft Windows

Windows NT
- Windows NT is an operating system for server computers and workstations.
- It has three subfamilies that share the same kernel.
- Windows NT is targeted for consumer and corporate desktops.

Windows
- Windows is an operating system for personal computers and tablets.
- It competes with macOS, iPadOS, and Android.
- Windows is the most popular desktop operating system with a 70% market share as of March 2023.

Windows Server
- Windows Server is an operating system designed for server computers.
- It has a strong naming scheme and competition from Linux.

Windows PE
- Windows PE is a lightweight version of Windows used for installation, recovery, and troubleshooting.
- It is used for installing Windows on bare-metal computers.

Windows IoT
- Windows IoT is a general-purpose operating system for resource-limited devices.
- It is developed for embedded systems and is folded under the Windows Compact trademark.
- Windows families no longer being developed include Windows 9x, Windows Mobile, Windows Phone, and Windows Embedded Compact.