Linux is an open-source operating system that runs on computing devices.
Operating systems are essentially how users interact with their computing device (computer, phone, tablet, smart watch etc).
Linux is the brainchild of developer Linus Torvalds, and has been adopted by many companies across the world as an inexpensive platform to power computer devices.
The Linux operating system comes in many different types and names, these are called “distributions” – some of the more popular distributions are:
A good source to explore and find many of the different types of distributions is a site called DistroWatch.
Most Linux distributions are free.