The JavaScript library for modern SVG graphics.

Snap.svg

A collection of common interactive command line user interfaces.

Inquirer.js

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.

:fire: An extremely fast, React-like JavaScript library for building modern user interfaces

Dropzone is an easy to use drag'n'drop library. It supports image previews and shows nice progress bars.

The official Semantic-UI-React integration