Who kept Odysseus from leaving the island?

Odysseus was kept from leaving the island of Ogygia by the nymph Calypso. She had fallen in love with him and held him captive for several years, wanting him to stay with her. Despite his longing to return home to Ithaca, Odysseus was unable to leave until the gods intervened, specifically Hermes, who delivered a message from Zeus commanding Calypso to let him go.