Jest is a delightful JavaScript Testing Framework with a focus on simplicity.

REST API client library for .NET

The world’s first API testing platform that auto-generates unit test cases with dependency mocks from API calls. Using advanced AI, it simplifies test creation, debugging, and evolution, ensuring comprehensive coverage and boosting software quality.

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

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

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