Proportion of Green Open Space in a region is targeted at least 30% of city area. The regency/city government in West Java Province has not been able to meet that target. In order to facilitate regency/city governments to meet the target of green open space, Department of Housing and Settlement in Province West Java has built an information system on green open space. This research aims to develop information system of green open space that has been built by arranging green open space database of regency/city in West Java in webGIS based application and provide information about Spatial Plan Details of regency/city in West Java which can be instrument to inventory and management of data about green open space in West Java. The method used to develop applications that have been built is fusebox. The results obtained are a web-based participatory application that can be accessed by the public online.