Microsoft Windows, commonly referred to as Windows, is a group of several proprietary graphical operating system families, all of which are developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. Wikipedia
Developed by: Microsoft Corporation
Initial release date: 20 November 1985
Platforms: IA-32, x86-64, ARM, ARM64; Previously: 16-bit x86, DEC Alpha, MIPS, PowerPC, Itanium
Written in: C++, C#, JavaScript, Visual Basic
OS family: Windows NT, Windows Embedded Compact
Kernel types: Hybrid kernel (Windows NT family, Windows CE), Monolithic kernel (MS-DOS, Windows 9x and earlier)