The Research Center for Renewable Energy Mapping and Assessment (ReCREMA) in Masdar Institute (UAE) was established in 2012 with the mandate to develop local capacity and accurate databases of renewable energy potentials in the United Arab Emirates and the Arabian Peninsula. To help the achievement of these goals, ReCREMA created a powerful Spatial Data Infrastructure (SDI) based in open source and open standards. On the top of this SDI several GIS-based tools were developed and published over the last four years. The UAE Solar atlas, the UAE Solar Technology Simulator, the UAE wind atlas and the Gulf Earth portal are some of the main webgis products developed as part of this initiative. Also, a satellite-based real time tool that shows real time solar maps updated every 15 minutes was developed in both mobile and desktop formats. Mobile apps have the advantages of using the device location for a better user experience. Recent developments include a real time dust monitoring and forecasting tools covering the whole Arabian Peninsula. All these products were made publicly available in app stores and in ReCREMA website. The decision to use open source GIS platforms in ReCREMA will allow to outreach a large pool of potential end-users and to provide accurate, reliable and updated tools to decision makers, industrial developers, investors and the general public.