About Postman Postman is the world’s leading API platform, used by more than 17 million developers and 500,000 organizations worldwide for building and using APIs.

Using Postman’s UI, I can hit any internal or external API. We support multiple protocols like HTTP, GraphQL, and gRPC, which are popular in microservices.

Postman, the world’s leading API platform, today announced a major advance in its mission to support developers across each stage of the API-first lif ...