Apollo GraphQL is a software company that provides an open-source, full-stack development platform for building and deploying GraphQL APIs. The company was founded in 2016 by Geoff Schmidt, Matt DeBergalis, and others. Apollo GraphQL's platform includes tools for building, testing, and deploying GraphQL APIs, as well as a client-side library for consuming those APIs. The company's customers include Airbnb, Audi, Expedia, and The New York Times. Apollo GraphQL is headquartered in San Francisco, California.