Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster.

Built for developers and testers alike, SoapUI is the only open source tool that covers the entire testing spectrum (functional, security, load, mocking).

Build and run powerful mobile iOS and Android tests directly from your browser.

End-to-end test automation using plain English or GenAI

Automate API workflows. Chain HTTP requests. Validate. Zero code.

Selenium automates browsers. That's it! What you do with that power is entirely up to you.