Cesium is lead by the Cesium Consortium, started by Analytical Graphics, Inc. and Bentley Systems. The consortium was started to

  • accelerate open-source Cesium development and
  • support long-term open-source Cesium sustainability.

The Cesium Consortium

  • collaborates to influence the Cesium roadmap and prioritize bug fixes with input from the community,
  • collaborates on outreach such as conferences, the Cesium website, and social media, and
  • participates in social coding events such as code sprints and bug bashes.

If Cesium is important to your organization and you would like to significantly influence Cesium's future and support its long-term open-source sustainability, send a note to the Cesium lead, Patrick Cozzi, pcozzi@agi.com, to learn about joining the consortium.

Cesium was founded by AGI (AGI) in 2011 as a cross-platform virtual globe for dynamic-data visualization in the space and defense industries. Since then, Cesium has grown into a 3D globe serving industries from geospatial and oil and gas to agriculture, real estate, entertainment, and sports.

AGI uses Cesium in many of its own applications, such as ComSpOC and NORAD Tracks Santa, and develops value-add products for Cesium including the STK Terrain Server.

Meet the AGI team

Bentley creates software for advancing infrastructure used by architects, engineers, geospatial professionals, constructors, and owner-operators.

Bentley Systems adopted Cesium to visualize and interact with highly detailed infrastructure engineering models set in the reality context of their surrounding environment. The digital engineering models are created with Bentley's MicroStation and BIM applications, and the context is provided through reality meshes, created from digital photography and scanning devices using Bentley's ContextCapture.

Open Standards and Formats

A number of open 3D geospatial formats have grown out of Cesium. Open formats create interoperability for a full ecosystem of tools.

CZML, the Cesium Language, is a JSON schema for describing time-dynamic 3D scenes such as of satellites and aircraft. The quantized-mesh format enables efficient 3D terrain streaming and rendering. The Cesium team has worked closely with Khronos to create glTF, the GL Transmission Format, which is the open-standard runtime asset format for WebGL engines. 3D Tiles are a specification for streaming massive heterogeneous 3D geospatial datasets.


To say hi, email the Cesium product manager at AGI, Todd Smith, at todd@agi.com.

For technical questions, visit the forum where the Cesium team and community are active.