Three.js

"Three.js makes 3D web development easy, flexible, and fast with great performance and vast community support."

"The three.js community provides amazing support & resources in 3D web development no matter what skill level you are and has a very easy to use library with great documentation"

"With the threebox extension, I was able to draw 3D lines on the map. Super useful!"

"Used for the demo. WebGL makes real time graphics for the web fast."