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

RapidAPI for Mac is a full-featured HTTP client that lets you test and describe the APIs you build or consume. It has a beautiful native macOS interface to compose requests, inspect server responses, generate client code and export API definitions.

Free & OpenSource REST API Testing Tool for all levels in a Test Pyramid

Bruno is a Fast and Git-Friendly Opensource API client, aimed at revolutionizing the status quo represented by Postman, Insomnia and similar tools out there.

Browser and Mobile Automation Test Framework for Node.js

The Complete Continuous Testing Platform Any test. Any device. App quality without limits.