Recently, awareness and utilization of open source software has been increased, and interest of open source in spatial information industry has also been increased. Especially, in developing countries trying to build National Spatial Data Infrastructure (NSDI), movement to utilize open source technology is significant because it costs less for maintenance and it is easy to operate. The purpose of this research is to leave a case creating web-based platform environment to apply to the countries attempting to build real National Spatial Data infrastructure by developing and applying open source. In order to implement this, the user interface and services using OpenLayers, jquery, and Ajax were developed.