Requestly is an open-source tool that simplifies API development, testing, mocking, and integration for developers and QAs.

HyperTest is a no-code test automation tool that regresses all your APIs by auto-generating integration tests using your network traffic, also giving a way to reproduce these failures inside actual user-journeys.

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.

Swagger UI allows anyone — be it your development team or your end consumers — to visualize and interact with the API’s resources without having any of the implementation logic in place

Browser and Mobile Automation Test Framework for Node.js

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