SeleniumBase Case Plans is Test Case Management Software that uses Markdown tables for displaying test plans directly in GitHub (and other source code management systems that support Markdown format).

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

REST API client library for .NET

Fully integrated API and web service testing capabilities that automate end-to-end functional API testing.

Robot Framework is a generic open source automation framework. It can be used for test automation and robotic process automation (RPA).

Hand-crafted lightweight Rest Client for testing APIs. Supports collections, environments, git collaboration and local storage.