Existentialism is a philosophy which emphasizes on human existence above it's essence. Existentialists believe that existence precedes essence i.e. you just exist and then you figure out or try to figure out what yo have to do. From this notion many existential theories are churned out.
So in a manner of opposition following theories qualify:
1) Religious theories and the philosophies related to creation of humans and universe by a God
2) Theories that say that there is a larger purpose to this life
3) Theories that believe that there are possibilities beyond human action that can be influenced in some manner.