Earth Enterprise

"Earth Enterprise is the open source release of Google Earth Enterprise, a geospatial application which provides the ability to build and host custom 3D globes and 2D maps. Earth Enterprise does not provide a private version of Google imagery that's currently available in Google Maps or Earth.
The application suite consists of three core components:

• Fusion - imports and 'fuses' imagery, vector and terrain source data in to a single flyable 3D globe or 2D map.
• Server - Apache or Tornado-based server which hosts the private globes built by Fusion.
• Client - the Google Earth Enterprise Client (EC) and Google Maps Javascript API V3 used to view 3D globes and 2D maps, respectively.

Earth Enterprise Fusion & Server currently run on 64-bit versions of the following operating systems:

• Red Hat Enterprise Linux versions 6.0 to 7.2, including the most recent security patches
• CentOS 6.0 to 7.2
• Ubuntu 10.04, 12.04 and 14.04 LTS

Refer to the wiki for instructions on building from source on one of these platforms."

https://github.com/google/earthenterprise/

https://github.com/google/earthenterprise/wiki/Build-Instructions