
Description: Firefox Developer Edition is a version of the Firefox web browser aimed at web developers. It includes built-in web developer tools like the JavaScript Debugger, Web Console, Network Monitor, and Page Inspector.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Stainless is an open-source browser extension that helps prevent data tracking by blocking third-party cookies and scripts. It aims to give users more privacy and control over their web browsing experience.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API