Cesium is a WebGL virtual globe and map engine.
Mission
Our mission is to create the leading web-based globe and map for visualizing dynamic data. We strive for the best possible performance, precision, visual quality, ease of use, platform support, and content.
License
Apache 2.0. Cesium is free for both commercial and non-commercial use.
Get Started
See the Getting Started. Have questions? Ask them on the forum.
Interested in contributing? See the wiki.