What is Postman used for?

Postman is an API platform for designing, testing, documenting and monitoring APIs, with a desktop client, mock servers, collections and AI agent features. It is a good fit for developers testing REST and other APIs, QA teams automating API checks, and platform teams documenting and cataloguing APIs.

Yes. Postman has a free plan, and paid plans start at $9 per seat per month.

Is Postman open source?

No. Postman is proprietary (closed-source) software. Open-source alternatives to Postman include Hoppscotch, Insomnia and Requestly.

What are some alternatives to Postman?

Postman competes with Apidog, Thunder Client and Kreya. For open-source options, see Enlisted's ranked list of open-source Postman alternatives.

Postman: features, pricing and alternatives

About Postman

Postman is a commercial platform used by developers and API teams to build and work with APIs. Its familiar API client lets users send requests and inspect responses, and the wider platform adds design, testing, documentation, monitoring and governance in one place.

The site groups capabilities into designing and building, testing and validating, and managing and operating APIs. Design tools include Spec Hub, workspaces, documents, mock servers, an SDK generator and Flows. Testing covers the API client, collection runner, performance and functional testing, monitors, webhook testing and data-driven testing. Management features include an API catalog, insights and an application inventory. AI pieces include Agent Mode, a CLI, and an MCP server and catalog.

Postman is proprietary software with a downloadable desktop app, a cloud service and a pricing page. It suits backend, frontend and QA engineers as well as platform teams that publish APIs to partners or internal users.

Key features

API client for sending and inspecting requests
Collections and collection runner
Mock servers and SDK generator
Performance and functional testing
Monitors and webhook testing
API catalog and workspaces
Agent Mode, CLI and MCP server

Good fit for

→Developers testing REST and other APIs
→QA teams automating API checks
→Platform teams documenting and cataloguing APIs

Tags: api; api-testing; documentation; mock-servers; developer-tools; mcp

Postman: questions and answers

What is Postman used for?: Postman is an API platform for designing, testing, documenting and monitoring APIs, with a desktop client, mock servers, collections and AI agent features. It is a good fit for developers testing REST and other APIs, QA teams automating API checks, and platform teams documenting and cataloguing APIs.
Is Postman free?: Yes. Postman has a free plan, and paid plans start at $9 per seat per month.
Is Postman open source?: No. Postman is proprietary (closed-source) software. Open-source alternatives to Postman include Hoppscotch, Insomnia and Requestly.
What are some alternatives to Postman?: Postman competes with Apidog, Thunder Client and Kreya. For open-source options, see Enlisted's ranked list of open-source Postman alternatives.