Cesium is a JavaScript library for creating 3D globes and 2D maps in a web browser without a plugin. It uses WebGL for hardware-accelerated graphics, and is cross-platform, cross-browser, and tuned for dynamic-data visualization.

http://cesiumjs.org/

Planetary App

An instance of the Cesium Planetary App is available at this page

Documentation about deploying and using it is available from the wiki.

License

Apache 2.0. Cesium is free for both commercial and non-commercial use.