Postman

Postman is the most widely used API development and testing platform, serving over 30 million developers worldwide with tools for designing, building, testing, documenting, and monitoring APIs. Its AI assistant, Postbot, adds intelligent automation to common API development tasks. The core workspace provides an environment for constructing and sending HTTP requests, inspecting responses, and organizing API calls into collections. Developers use it to test endpoints during development, debug API issues, and verify that APIs behave correctly under various conditions. Postbot, the integrated AI assistant, can generate test scripts from API responses, write documentation from request/response examples, create mock servers for frontend development, and suggest fixes when API calls fail. The automated testing framework allows teams to define test suites that run as part of CI/CD pipelines, ensuring APIs continue to function correctly as code changes. Monitors can run collections on a schedule, alerting teams when API endpoints break or performance degrades. API documentation is generated directly from collections, producing interactive documentation where consumers can try API calls from the docs page. Mock servers simulate API behavior before backend implementation is complete, enabling frontend teams to develop in parallel. Environment variables and secrets management support testing across development, staging, and production environments without modifying requests. The workspace collaboration model allows teams to share collections, environments, and documentation, creating a shared understanding of API behavior. Postman is best suited for developers and teams that build, consume, or test APIs as a significant part of their work. It is particularly valuable for teams building microservice architectures where multiple APIs need to be developed and tested in concert. QA engineers use it for API testing, frontend developers use it for understanding and debugging backend APIs, and technical writers use it for producing API documentation. The free tier is comprehensive for individual developers, including unlimited requests, basic collaboration, and access to Postbot with usage limits. Paid team plans add advanced collaboration, admin controls, integrations with CI/CD tools, and higher usage limits for AI features and monitoring. Enterprise plans include SSO, audit logs, and dedicated support.