OpenAPI Specification vs Postman: What are the differences?
Developers describe OpenAPI Specification as "An API description format for REST APIs". It defines a standard, language-agnostic interface to RESTful APIs which allows both humans and computers to discover and understand the capabilities of the service without access to source code, documentation, or through network traffic inspection. On the other hand, Postman is detailed as "Only complete API development environment". Postman is the only complete API development environment, used by nearly five million developers and more than 100,000 companies worldwide.
OpenAPI Specification and Postman can be primarily classified as "API" tools.
Typeform, Bukalapak, and PedidosYa are some of the popular companies that use Postman, whereas OpenAPI Specification is used by Medidata Solutions, Kapten, and Unmetric. Postman has a broader approval, being mentioned in 1755 company stacks & 2238 developers stacks; compared to OpenAPI Specification, which is listed in 22 company stacks and 8 developer stacks.