Postman

Postman is a popular API development and testing platform that enables developers to design, test, document, share, and monitor APIs through a unified interface combining request builders, automated testing, mock servers, and collaboration tools. The request builder supports all HTTP methods with configurable headers, parameters, body formats, authentication schemes, and pre-request scripts, enabling precise API testing across REST, GraphQL, SOAP, and WebSocket protocols. The environments and variables system enables parameterization of requests across development, staging, and production environments with variable scopes and dynamic variable generation. The test automation framework enables writing JavaScript test assertions that validate response status codes, body content, headers, and response times, with collection runner for executing test suites and Newman CLI for integration into continuous integration pipelines. The mock server feature creates simulated API endpoints that return predefined responses, enabling frontend development to proceed before backend APIs are ready. The API documentation generator creates interactive documentation from collection definitions, with automatic publishing to shared team workspaces. The collaboration features include team workspaces, shared collections, environment templates, and role-based access control for managing API development across teams. The monitoring feature runs scheduled API tests from cloud locations, providing uptime alerts and performance metrics. Designed for API developers, QA engineers, backend developers, and technical teams building and maintaining REST and GraphQL APIs.