NASA World Wind leverages Microsoft .NET technology for rapid development and to easily access open standards such as XML, WMS, and other graphics standards. Real-time 3D graphics are driven by DirectX allowing a wide base of compatibility with accelerated video hardware.
TerraServer-USA of Microsoft Research hosts USGS aerial photography and topographic maps found in NASA World Wind. (terraserver.microsoft.com)
The Java version of World Wind thanks EJ Technologies for their developer tools. (ej-technologies.com)