Software
My guide on software
What is a software?
The programs and other operating information used by a computer. for example: Microsoft windows. MAC.
System Software
System software is computer software designed to operate and control the computer hardware.
Operating software
A type of system software supervising and directing all of the other software components plus the computer hardware.
Application Software
Application software is all the computer software that causes a computer to perform useful tasks beyond the running of the computer itself.