CesiumJS is an open-source JavaScript library for world-class 3D globes and maps. Our mission is to create the leading 3D globe and map for static and time-dynamic content, with the best possible performance, precision, visual quality, platform support, community, and ease of use.

The Cesium Consortium

CesiumJS is developed by an open-source community, with support from the Cesium Consortium, founded by Analytical Graphics, Inc. and Bentley Systems.


Cesium was founded by 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.

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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.

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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.

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3D Tiles