I heard many times¹ Freud and Nietzsche named together, but I personally fail to understand a deep and detailed analogy between the two, beside the fact that both were revolutionary in their work, anticipating a modern view of human nature and society.
Is there something more I'm missing?
 For example, this is a quote from Freud's Wikipedia article:
He read Friedrich Nietzsche as a student, and analogies between his work and that of Nietzsche were pointed out almost as soon as he developed a following. In 1900, the year of Nietzsche's death, Freud bought his collected works; he told his friend, Fliess, that he hoped to find in Nietzsche's works "the words for much that remains mute in me." Later, he said he had not yet opened them. Freud came to treat Nietzsche's writings "as texts to be resisted far more than to be studied."