
Description: Lightning Design System (LDS) is an open-source component library that allows developers to build consistent, accessible web interfaces for Salesforce products. It provides a collection of reusable components like buttons, forms, navigation, etc. as well as CSS frameworks, JavaScript, design guidelines, and other resources.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Semantic UI is an open-source front-end development framework that helps web developers build consistent, responsive web pages and web applications. It provides theming capabilities, templates, and reusable UI components to quickly build modern interfaces.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API