Spectator is described as «simplifies access to satellite imagery from NASA, ESA and other providers. It gives you access to images archives, but also tracks satellites in real-time to give you information about next image acquisition» and is a Map service in the travel & location category. There are more than 10 alternatives to Spectator, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and Android. The best alternative is Google Earth. It»s not free, so if you»re looking for a free alternative, you could try Marble or NASA World Wind. Other great sites and apps similar to Spectator are Mapline, GMap.NET, SAS.Planet and pTolemy3D.
