By marketing role

By marketing role

Microsoft, the developer of Windows, has registered several trademarks each of which denote a family of Windows operating systems that target a specific sector of the computing industry. As of 2014, the following Windows families are being actively developed:

Windows NT: Started as a family of operating system with Windows NT 3.1, an operating system for server computers andworkstations. It now consists of three operating system subfamilies that are released almost at the same time and share the same kernelWindows: The operating system for mainstream personal computers. The latest version is Windows 10. It is almost impossible for someone unfamiliar with the subject to identify the members of this family by name because they do not adhere to any specific rule; e.g. Windows Vista,Windows 7, Windows 8/8.1 and Windows RT are members of this family butWindows 3.1 is not. The main competitor of this family is OS X by Apple Inc. (c.f. Usage share of operating systems § Market share by category)Windows Server: The operating system for server computers. The latest version isWindows Server 2012 R2. Unlike its clients sibling, it has adopted a strong naming scheme. The main competitor of this family is Linux. (c.f. Usage share of operating systems § Market share by category)Windows PE: A lightweight version of its Windows sibling meant to operate as a live operating system, used for installing Windows on bare-metal computers (especially on many computers at once), recovery or troubleshooting purposes. The latest version is Windows PE 10.0.10586.0.Windows Embedded: Initially, Microsoft developed Windows CE as a general-purpose operating system for every device that was too resource-limited to be called a full-fledged computer. Eventually, however, Windows CE was renamed Windows Embedded Compact and was folded under Windows Compact trademark which also consists of Windows Embedded Industry, Windows Embedded Professional, Windows Embedded Standard,Windows Embedded Handheld and Windows Embedded Automotive.[7]

The following Windows families are no longer being developed:

Windows 9x: An operating system that targeted consumers market. Discontinued because of suboptimal performance. (PC World called its last version, Windows ME, one of the worst products of all times.)[8]Microsoft now caters to the consumers market with Windows NT.Windows Mobile: The predecessor to Windows Phone, it was a mobile phone operating system. The first version was called Pocket PC 2000; the third version,Windows Mobile 2003 is the first version to adopt the Windows Mobile trademark. The last version is Windows Mobile 6.5.Windows Phone: An operating system sold only to manufacturers of smartphones. The first version was Windows Phone 7, followed by Windows Phone 8, and the last versionWindows Phone 8.1. It was succeeded byWindows 10 Mobile