NASA World Wind: virtual globe for an open smart city

In this article, firstly the open source framework NASA World Wind is introduced. NASA World Wind comes mainly with two versions. The Java version is well established in the market and has many customers. On the other hand the new version, which is the Web version, Web World Wind, is still at the dawn of development cycle, with many features implemented and already used in several applications, with a great future ahead. Following the introduction of NASA World Wind, the features available in the Web World Wind are listed and a short comparison with Cesium library is provided. Additionally, an application developed in the smart cities context with Web World Wind is described