Daemon - PC Terminology

In Unix and other operating systems a daemon is the term used for a computer program that runs as a background process as opposed to being controlled by an interactive user.

Wiki: "According to Fernando J. Corbato who worked on Project MAC in 1963 his team is the first to use the term daemon. The use of the term daemon was inspired by Maxwell's demon, an imaginary agent in physics and thermodynamics that helped to sort molecules."

In other words, the term deamon does not in this case refer to a mythical creature out of greek mythology or, for that matter, a dillusional idea of good and evil.