Postman
The complete API development platform.
Build, test, document and share APIs with a powerful GUI platform trusted by 25 million developers.
About Postman
Postman is the world's leading API platform, used by over 25 million developers. It provides a comprehensive suite of tools for designing, testing, documenting, and monitoring APIs throughout the development lifecycle.
With Postman, you can send HTTP requests, inspect responses, write automated test scripts in JavaScript, organize requests into Collections, and run them with Newman (the CLI runner). The collaborative features allow entire teams to share collections, environments, and documentation.
Postman's API documentation feature auto-generates beautiful, interactive docs directly from your collections. Mock servers let frontend developers build against API specifications before the backend is ready. The built-in API Monitor tracks endpoint performance over time.
Postman has also launched Postbot — an AI assistant that auto-generates test cases, writes documentation, and explains responses, making API testing faster and more thorough.