GeoNode is a Web Spatial Content Management System that uses the Django Python web framework. MapStore is an open source WebGIS product and highly customizable framework that has been used as the default user interface to visualize catalog, map viewer and geospatial applications in GeoNode. This presentation provides an overview of the integration of the MapStore framework inside the GeoNode ecosystem and the main differences with the MapStore product, along with guidelines and references to resources for its customization and the development of custom functionality.