Visualization

• d3 / d3 - Bring data to life with SVG, Canvas and HTML. 📊📈🎉
• flekschas/piling.js - A general framework and library for exploring thousands of small multiples
• apache / echarts - Apache ECharts is a powerful, interactive charting and data visualization library for browser
• airbnb / visx - 🐯 visx | visualization components
• antvis / G2 - 📊 A highly interactive data-driven visualization grammar for statistical charts.

WebGL

• PavelDoGreat/WebGL-Fluid-Simulation - Play with fluids in your browser (works even on mobile)
• potree/potree - WebGL point cloud viewer for large datasets
• akira-cn/ICG-WebGL - 交互式计算机图形学——基于WebGL的自顶向下方法（第七版）的例子与练习题
• gkjohnson/three-gpu-pathtracer - Path tracing renderer and utilities for three.js built on top of three-mesh-bvh.

Graph Editor

• jagenjo/webglstudio.js - A full open source 3D graphics editor in the browser, with scene editor, coding pad, graph editor, virtual file system, and many features more.