Metro 4 is a component library for developing sites with HTML, CSS, and JS. Quickly prototype your ideas or build your entire app with responsive grid system, extensive prebuilt components, and powerful plugins.
Metro 4 developed to build websites in Windows Metro Style and include general styles, grid, layouts, typography, 100+ components and routines, 600+ built-in icons.
Metro 4 is an open-source and has an free dual licensing model.
Pandora - is a Responsive and Clean Admin Dashboard template. This template created with Metro 4 with uses native classes, elements, and components. The template contains different types of reusable and professional responsive components with different variations.