If what you need isn’t on the list, you can make your own distribution or base it on something and put the software you need on it. This is what makes Linux a universal operating system for everything.
Linux, what is it?
Linux is an operating system whose kernel is distributed free of charge. It consists of a kernel and a set of small programs which interact with that kernel.
What is a Linux distribution
A Linux distribution is when different companies and developers take a kernel and add on top of it a set of programs: shells, compilers, drivers, and everything else.