
Description: Headless UI is an unstyled, fully accessible UI component library for React. It provides composable UI building blocks without any built-in styles, allowing developers to style components to match their product design system.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: UIkit is an open-source web framework for developing fast and powerful web interfaces. It provides a collection of HTML, CSS, and JS components to build responsive, mobile-first websites and apps.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API