Made by: Nilesh Kumar

Windows 8 is a personal computer operating system developed by Microsoft as part of Windows NT family of operating systems. Development of Windows 8 started before the release of its predecessor, Windows 7, in It was announced at CES 2011, and followed by the release of three pre- release versions from September 2011 to May The operating system was released to manufacturing on August 1, 2012, and was released for general availability on October 26, windows

iOS 7 is the seventh major release of the iOS mobile operating system designed by Apple Inc as the successor to iOS 6. It was announced at the company's Worldwide Developers Conference (WWDC) on June 10, 2013, and was released on September 18, 2013.[2] iOS 7 includes a redesigned user interface and numerous functionality changes. Ios 7

The MacBook is a brand of notebook computers manufactured by Apple Inc. from early 2006 to late It replaced the iBook series and 12-inch PowerBook series of notebooks as a part of the Apple–Intel transition from PowerPC. Positioned as the low end of the MacBook family, below the premium ultra-portable MacBook Air and the powerful MacBook Pro,[3] the Apple MacBook was aimed at the consumer and education markets.[4] It was the best-selling Macintosh in history, and according to the sales- research organization NPD Group in October 2008, the mid-range model of the MacBook was the single best-selling laptop of any brand in US retail stores for the preceding five months Macintosh

Linux was originally developed as a free operating system for Intel x86- based personal computers. It has since been ported to more computer hardware platforms than any other operating system. It is a leading operating system on servers and other big iron systems such as mainframe computers and super computers. Linux

Unix (officially trademarked as UNIX) is a multitasking, multi-user computer operating system that exists in many variants. The original Unix was developed at AT&T's Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.[1] From the power user's or programmer's perspective, Unix systems are characterized by a modular design that is sometimes called the "Unix philosophy," meaning the OS provides a set of simple tools that each perform a limited, well-defined function,[2] with a unified filesystem as the main means of communication[1] and a shell scripting and command language to combine the tools to perform complex workflows. Unix