It was maintained by the primary author of the setting, Terry K. Amthor of Eidolon Studio (who also holds the trademark for Shadow World, and copyrights for non-gaming fiction related to the world), until his death.
It was supervised by the creator of the setting, Terry K. Amthor of Eidolon Studio (who also owns the rights to Shadow World and has copyright claims on fiction not related to gaming based on the world), until he lost his life.