Open image in new window In this paper we present BEWARE multi-device web GIS application that provides management of geospatial and attribute landslides data. Software solution is in use from July 2015 and it was continuously and successfully used for collecting field data for the project “The Harmonization of Landslide Data and training of municipalities for its monitoring: BEWARE (BEyond landslide aWAREness”). It consists of several components, two mobile applications for data collection on the field, both on-line and in off-line mode, using android devices, web GIS application for field data and web analytical tool for comprehensive statistics. Mobile application provides integration of thematic layers in the form of tile package, with field work data, as well data synchronization with GIS web portal on server geodatabase. The BEWARE is a platform for interactive landslide event reporting, analyzing and unifying landslide data and multimedia management. Development of multi-functional application was initiated in order to facilitate and improve the landslides geodatabase use and avoid building-up in areas where there is an apparent high risk of landslides. Apart from authorized users from Faculty of Mining and Geology, Geological survey and employees of Ministry of Mining and Energy of Serbia, system is used by municipalities who can record the occurrence of landslides as early notification for further inspection. Application provides several different Open Data collections for each municipality.