What is the main piece of computer software on which every other piece of software relies?

The main piece of computer software on which every other piece of software relies is referred to as the "operating system". It is responsible for all the major channels of communication between the software and the hardware. 

Yess gfvtvt t t t t too many of you are not going too far away i don’t wanna was like a whole lot more stuff i gotta do you want to come home or do y’all come home