The most advanced responsive front-end framework in the world. Quickly create prototypes and production code for sites that work on any kind of device.

🏩 Cascading grid layout plugin

💞 Filter & sort magical layouts

Grid based on CSS3 flexbox

Lightweight, vanilla javascript parallax library

Free and Open Source UI Kit for Bootstrap 5, React, Vue.js, React Native and Sketch based on Google's Material Design

The classless CSS reset (perfect for Communists).

The simple, customizable, tiny javascript color extractor

modularscale.com website source