
Description: Firefox Developer Tools are a set of web developer tools built into Firefox browser to allow debugging, editing, and profiling web pages and applications. They include features like the Page Inspector, JavaScript Debugger, Network Monitor, Accessibility Inspector, Storage Inspector, and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Plunker is an online community for creating, collaborating on and sharing web development projects. It provides an online code editor and preview that allows developers to easily build web apps, web sites, JavaScript apps, etc. without any setup or hosting required.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API