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

Voiden is a developer-first API client with local storage, Git-integrated, all based on markdown + offline support.

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

Real API Design-first Development Platform Design. Debug. Test. Document. Mock. Build APIs Faster & Together.

A test framework for testing bash scripts

Simulate APIs, integrations, and environments at enterprise scale.