Altair GraphQL Client vs Postman

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.

Postman is API development platform for designing, testing, and documenting APIs with a collaborative workspace.. It is available under a freemium model. This tool falls under the api tools category.