
Description: Variable Grid System is an open-source, flexible grid framework for responsive web design. It allows developers to build fluid grid layouts that adapt to any screen size or device. The system uses Sass variables to customize column counts, gutter widths, and more.
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