Postman is an API development platform from Postman Inc., used by millions of developers to build, test, document and share APIs. It lets you send REST, GraphQL, WebSocket and gRPC requests, organize them into reusable collections, write automated test scripts, and collaborate with teammates through shared workspaces. A companion CLI tool, Newman, runs Postman collections in continuous integration pipelines.
Why Postman Became the Standard API Testing Tool
Postman grew from a simple Chrome extension for firing off HTTP requests into a full API platform because it solved a practical problem: manually testing APIs with raw code or command-line tools like curl is slow and hard to share. Its Collections feature lets a team save, organize and hand off a set of API requests as a single reusable, documented unit.
Postman Features
- Request Builder — construct REST, GraphQL, WebSocket and gRPC requests with a visual interface
- Collections and Environments — organize related API requests and swap variables (like base URLs or tokens) between environments
- Automated Test Scripts — write pre-request and test scripts in JavaScript to validate API responses
- Collection Runner — execute an entire collection of requests in sequence, with test results reported per request
- Mock Servers — simulate an API's responses before the real backend exists
- API Documentation Generation — auto-generate shareable, browsable documentation from a collection
- Team Workspaces — collaborate on collections and environments with shared, version-tracked workspaces
- Newman CLI — run Postman collections from the command line for continuous integration testing
How to Install Postman on Windows
- Open the official download page using the button on this page, which goes to postman.com.
- Download the Postman desktop app for your operating system.
- Run the installer and launch Postman once setup completes.
- Create a free Postman account or sign in to sync collections across devices.
- Create your first request or import an existing collection to start testing an API.
Is Postman really free?
Freemium. Postman offers a free plan for individuals and small teams, with paid tiers adding advanced collaboration, governance and higher usage limits for larger organizations.
How to download Postman safely
Use the request button on this page and we will email you the current link for www.postman.com — the publisher's own website — so you receive the authentic build. We do not host, mirror, patch or repackage this software in any way.
Avoid third-party "download manager" sites offering Postman. They commonly wrap the genuine installer in their own bundler, which is how adware and browser hijackers get onto a machine that the user believed was clean.
Frequently asked questions
Is Postman free?
Yes, a free plan is available; paid plans add team collaboration and higher usage limits.
Can Postman test GraphQL APIs?
Yes, alongside REST, WebSocket and gRPC requests.
Does Postman require an account?
A free Postman account is required to sync collections and use cloud-based collaboration features.
What is Newman in Postman?
A command-line companion tool that runs Postman collections outside the app, commonly used in CI/CD pipelines.
Can Postman generate API documentation?
Yes, it can auto-generate shareable documentation from a collection.
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