
Description: The Windows Preinstallation Environment (Windows PE) is a lightweight version of Windows used for deploying, troubleshooting, and recovering Windows computers. It allows administrators to prepare hard drives for Windows installation, boot computers into a limited operating system, run diagnostics, and recover systems.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: AppleJack is an open-source system utility for Mac that aims to detect and repair directory issues and other problems. It can diagnose issues with things like permissions, caches, extensions, preferences files, and other components.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API