Postman
Infra / DevOps · Freemium
Overview
A tool for building, testing, and documenting APIs, which are the connections that let software systems talk to each other. You send a request to an API and see exactly what comes back, then save that request to run again later. It started in 2012 as a side project and a free Chrome extension, and is now a full platform run by Postman, a San Francisco company. The company says more than 40 million developers and over 500,000 organizations use it, including most of the Fortune 500. It runs as a desktop app on Mac, Windows, and Linux, alongside a web version.
What people use it for
Developers use Postman to check how an API behaves while building or debugging software, sending a request and reading the response without writing throwaway code. Teams group related requests into collections that document how a service works and can be shared or run as a set. QA engineers write test scripts that run against a collection and fail the build when a response is wrong. Teams design an API from an OpenAPI spec before any code exists, and generate mock servers that return sample data so front end work can start early. Operations teams schedule monitors that call an API on a timer and alert when it breaks or slows down. Larger companies publish an internal catalog so staff can find and reuse existing APIs instead of building duplicates.
Key capabilities
The core API client sends requests over HTTP, GraphQL, gRPC, WebSocket, and other protocols, and saves them into collections. The Collection Runner and a command line tool run a collection's requests and tests in order, including inside a CI pipeline. Postman supports API design from OpenAPI and other specs, generates documentation from a collection, and can spin up mock servers. Monitors run collections on a schedule from Postman's cloud and report failures. Environments and variables let the same request run against local, staging, and production without editing it. Workspaces let teams work on the same collections with version control and inline comments, and a public API Network lets companies publish APIs for others to find. Flows is a visual builder for chaining API calls without code. There is an SDK generator, secret scanning and vaults, contract testing, API governance rules, and audit logs on higher plans, plus AI features that generate tests and documentation. Pricing has a free plan, then paid per user plans that add team members, role based access, and governance. As of March 2026 the free plan is limited to a single user, so any team of two or more has to move to a paid plan.
Limitations
The desktop app is heavy. Users report slow starts and high memory use, and it gets sluggish with large collections and many open tabs. Features that were once fully local now push you toward signing in and syncing to Postman's cloud, which some teams dislike for private work. The interface has grown crowded and is a lot to learn for a beginner. The free plan is now capped at one user, so collaboration requires paying, and monitoring and other limits on lower tiers are tight. It has no real load testing beyond basic performance runs. Team workspaces sometimes have sync conflicts, and support for some less common authentication methods is limited.
Insight
Postman is the default way most developers poke at an API, and for good reason: sending a request and reading the response is instant, and saved collections double as living documentation. It is genuinely useful the moment you are integrating with a service you do not control. The friction is that Postman keeps growing. What began as a lightweight request tool is now a large platform with design, mocks, monitors, catalogs, and AI, and the desktop app feels it, with slow starts and heavy memory use. More features also nudge you toward a cloud account for work that used to stay on your machine. The 2026 change capping the free plan at one user pushed many small teams onto paid plans or toward lighter alternatives. For a solo developer or a team already paying, it does the job well. For simple use, a smaller tool may be less of a load.
Pricing
Freemium
Website
Last checked 2026-08-30