Mockoon is the easiest and quickest way to design and run mock REST APIs.

Playwright enables reliable end-to-end testing for modern web apps.

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

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.

Monitor network requests and API failures with real-time insights

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