KMLfactbook.org

http://www.kmlfactbook.org/
kmlfactbook.org can use either Google Maps or the Google Earth browser plugin to preview the KML files that you create. To switch between the two modes press the 2D Map and 3D Map buttons to the right in the screen. The Preview in Map button will show the selected data-set in the Google Maps or Earth plugin preview window. The Download KML file button will download the same file to be saved locally on your disk or opened in the standalone Google Earth application.