ReadyAPI is a low-code API testing platform for development teams that care about creating test automation across any workflow.

Puppeteer is a Node.js library which provides a high-level API to control Chrome/Chromium over the DevTools Protocol.

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.

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

REST API client library for .NET

Browser and Mobile Automation Test Framework for Node.js