Altair GraphQL Client vs Apollo Studio

Altair GraphQL Client is an open-source GraphQL IDE for sending queries, mutations, and subscriptions to GraphQL APIs. It provides features like query autocompletion, schema documentation browsing, environment variables, and request collections. The client is available as a desktop application, browser extension, and web app.

Apollo GraphOS (formerly Apollo Studio) is a cloud platform for building, managing, and scaling GraphQL APIs. It provides a schema registry, operation analytics, and a supergraph architecture for composing multiple GraphQL services.