Hoppscotch is an open-source API development ecosystem that helps you create and test your API requests saving precious time in development.

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.

REST API client library for .NET

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

Design, debug, and test APIs locally or in the cloud

Test, scrape, generate, and automate without the pain and expense of hosting your own headless browsers.