Highlight.js
Javascript syntax highlighter
Slate
A completely customizable framework for building rich text editors.
Ant Design
🐜 A UI Design Language
W2ui
JavaScript UI library for data-driven web applications
Golden Layout
The ultimate Javascript layout manager
FullCalendar
Full-sized drag & drop event calendar (jQuery plugin)
React Widgets
set of stateless ui widgets for React
Pdf.js
PDF Reader in JavaScript
React Native Activity Feed
Stream React Native Activity Feed Components
Bootswatch
Themes for Bootstrap
Tinymce
TinyMCE is a JavaScript library for platform independent 'WYSIWYG' or rich text editing. It is released as open source under the LGPL.
Kendo Ui Core
Kendo UI Core
Material2
Material Design components for Angular
React95
🌈🕹 Refreshed Windows 95 style UI components for your React app
Litegraph.js
A graph node engine and editor written in Javascript similar to PD or UDK Blueprints, comes with its own editor in HTML5 Canvas2D. The engine can run client side or server side using Node. It allows to export graphs as JSONs to be included in applications independently.
Material Ui
React components that implement Google's Material Design.
Awesome Notifications
Lightweight JavaScript Notifications Library