A mobile operating system is the operating system that controls a mobile device — similar in principle to an operating system such as Windows, Mac OS, or Linux that controls a computer.

The term mobile device is used to mean a wide range of consumer electronics and mobile devices are multi-functional devices capable of hosting a broad range of applications for both business and consumer use.

A mobile operating system is also known as a mobile OS, a mobile platform, or a handheld operating system.

Android is a mobile operating system initially developed by Android Inc., a firm purchased by Google in 2005.

Android is based upon a modified version of the Linux kernel. It is programmed in C, C++ and Java with the graphical user interface.

Android OS supports mobile platforms like ARM, MIPS, Power Architecture,x86. Few Android-powered phones are Google Nexus and Samsung Galaxy.

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ReactOS is a free and open-source operating system based on the Windows NT architecture design, providing support for existing applications and drivers and an alternative to the current dominant consumer and server operating systems.

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