Linux is an open source operating system. Linux is a developed collaboratively which means no single company is solely responsible for its development or support. Linux can be used as OS on both servers and desktop PCs. Nowadays, there are many devices like phones, digital storage devices, cameras and wearable gadgets, etc… run Linux.
There are number of companies who distributeLinux software package like Red Hat Enterprise Lunix, Ubuntu and PCLinuxOS etc… because Linix is freely distributed, anyone can create a distribution for any intended use. Linux distribution includes Linux kernel, supporting libraries and utilities and other application softwares.