Linux is used as the base operating system for servers (Web, FTP, mail, databases), firewalls, routers, embedded systems, as well as in some DVD players, DVB tuners and other home appliances.
Linux is available for the office and home computer market, due to the emergence and development of a distribution; characterised by easy installation and large software resources. The governments of many European countries have implemented or are implementing Linux on state administration computers. Furthermore, due to the security, stability, ability to audit and the ease of modification of the Linux source code, it is used by the Police, Army, Intelligence, and Counter-intelligence agencies.
Most banking and financial institutions use Linux as their operating system. For example, the Wall Street trading system and the London Stock Exchange are based on this operating system.
Linux is the principal operating system used among the TOP500 list of supercomputers. It is in application within the film industry, both on servers and workstations. It is the prominent system on computers used to create animations and special effects. Among others it is used by Dreamworks®, Pixar® czy Industrial Light & Magic®.
Another application of the Linux operating system is medical devices, for example GE® computer tomography. Popular Wi-Fi signal access points are based on the simplified Linux kernel; ARM processors, which are used in cell phones, operate using this system.
Linux also has applications within GPS navigation, for instance TomTom® based their devices on the operating system.
Most of the decoders of satellite and terrestrial transmissions work using Linux.
Sales of Android smartphones (based on Linux) dominate the market. Most advanced phones in the world have a system based on Linux. Currently, the number of phones and tablets, with the Android operating system is greater than the total number of devices currently using Microsoft Windows. To fully understand the overall number of devices using Linux, you would need to add the servers, personal computers and any other devices for example home appliances.