
Description: GhostBSD is a user-friendly BSD-based operating system built on top of FreeBSD. It comes with the MATE desktop pre-installed and aims to provide an easy-to-use BSD experience for Linux users looking to try BSD.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Serenity OS is an open source operating system written from scratch. It has a focus on simplicity, elegance, and usability. It features a graphical user interface, web browser, productivity tools, games, and basic Unix command line utilities.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API