This paper aims at technological studying of multiple application method as common sharing platform for several space-time data. Untile now, almost several existing spatial data were made and managed separately using each specialized software such as CAD/CG or GIS. Google Inc. released the virtual globe program “Google Earth” (GE) on June of 2005. This program is available to everyone and it can easily handled by general user. We developed some original data converter and actually exported several format spatial data such as 3D objects, raster image and GPS tracking log data to GE. This tool is expected as useful communication tools for collaborative planning.