Linux (commonly /ˈlɪnəks/ lin-əks in English, also pronounced /ˈlɪnʊks/ lin-uuks in Europe) refers to the family of Unix-like computer operating systems using the Linux kernel. Linux can be installed on a wide variety of computer hardware, ranging from mobile phones, tablet computers, routers, and video game consoles, to mainframes and supercomputers. Linux is a leading server operating system, and runs the 10 fastest supercomputers in the world.