
Description: crDroid is a free and open-source operating system based on Android. It focuses on customization, performance, and security. crDroid is built from LineageOS and aims to provide a clean and smooth Android experience.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: postmarketOS is a Linux distribution aimed at bringing newer Linux versions to older Android devices. It allows using more recent applications on devices that are no longer officially supported by vendors.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API