#9 Linux powers a majority of the world's supercomputers

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 supercomputers. More than 90 percent of today's 500 fastest supercomputers run some variant of Linux, including the 10 fastest. Linux also runs on embedded systems, devices where the operating system is typically built into the firmware and highly tailored to the system, such as mobile phones, tablet computers, network routers, building automation controls, televisions and video game consoles.

#8 Linux runs Japanese high speed rail

The Shinkansen, also known as the "Bullet Train", is a network of high-speed railway lines in Japan operated by four Japan Railways Group companies. The train reaches the maximum speeds of 240–320 km/h. The Shinkansen employs an ATC (Automatic Train Control) system, eliminating the need for trackside signals. It uses a comprehensive system of Automatic Train Protection. Centralized traffic control manages all train operations, and all tasks relating to train movement, track, station and schedule are networked and computerized. Most of these systems are based on Linux.

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