Azure is a cloud computing service for building, testing, deploying, and managing applications and services through Microsoft-managed data centers.
Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
cdnjs is a free distributed JS library delivery service.
Screenshots with JavaScript.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
Material Design Lite is a library of components for web developers.