Postman - Collaborative API Development Platform

Postman is a platform to develop APIs collaboratively. Postman's features simplify each step of building an API and streamline collaboration so you can create better APIs - faster.

Main Features

• API Client - Quickly and easily send REST, SOAP, and GraphQL requests directly within Postman.
• Automated Testing - Automate manual tests and integrate them into your CI/CD pipeline to ensure that any code changes won't break the API in production.
• Design & Mock - Communicate the expected behavior of an API by simulating endpoints and their responses without having to set up a back-end server.
• Documentation - Generate and publish beautiful, machine-readable documentation to make your API easier to consume.
• Monitors - Stay up-to-date on the health of your API by checking performance and response times at scheduled intervals.
• Workspaces - Provide a shared context for building and consuming APIs, and collaborate in real-time with built-in version control.

Basic Free version is free for life with enough features to help you get started for free. Advanced features require monthly membership fees.