
Description: JavaScript Playground is an online code editor that allows you to write, run, and test JavaScript code easily in the browser. It has a clean interface with various code examples and challenges to help you learn JavaScript interactively.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: BlueJ is an integrated development environment specifically designed for teaching Java and object-oriented programming principles. It allows easy interaction and visualization to help beginners grasp key concepts like objects, classes and inheritance.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API