System Software: System software is a collection of programs used to run the system as assistance to other software programs. The compilers, editors, utilities, operating system components, drivers, and interfaces are examples of system software. This software resides in the computer system and consumes its resources. A computer system without system software cannot function.
Real-time Software: Real-time software deals with a changing environment. First, it collects the input and converts it from analog to a digital, control component that responds to the external environment and performs the action.