
Description: Puppeteer is a Node.js library developed by Google which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol. It allows developers to automate browser testing and scraping tasks.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: CasperJS is an open source web testing and automation tool written in JavaScript that uses headless browsing powered by PhantomJS and provides a high-level API for scripting browser interactions and assertions.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API