World Wind

World Wind is an open-source virtual globe first developed by NASA in 2003 for use on personal computers and then further developed in concert with the open source community since 2004. The original version relied onNET Framework, which ran only on Microsoft Windows The more recent Java version, World Wind Java, is cross platform, a software development kit aimed at developers and, unlike the oldNET version, not a standalone virtual globe application in the style of Google Earth The SDK includes a suite of basic demos, available at goworldwind.org. The World Wind Java version was awarded NASA Software of the Year in November 2009. The program overlays NASA and USGS satellite imagery, aerial photography, topographic maps, Keyhole Markup Language and Collada files.