
Description: Topcoat is an open-source CSS library created by Adobe to provide lightweight, reusable components for interface design. It offers a range of UI elements like buttons, menus, icons, etc. to help developers quickly build web apps with clean, minimalist design. Topcoat simplifies front-end development and aims to speed up the process.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Unsemantic is an open-source CSS framework that provides responsive grid layouts and UI components without imposing design semantics. It aims to get out of the way and let you craft semantically-meaningful markup.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API