Linux is a family of free and open-source Unix-like operating systems based on the Linux kernel. Linux powers many things in the world today, from smartphones to cars, supercomputers and home appliances, home desktops to enterprise servers. Linux was first released in 1991 by Linus Torvalds as a free and open-source project. Today, Linux is typically packaged in a Linux distribution and released under different names. Some of the familiar being Android for mobile devices, or Debian, Fedora, or Ubuntu for desktop computers and servers.