We are currently developing a prototypical software tool for editing semantic-based annotations of OpenStreetMap points of interest (POIs), through a fully visual user interface based on simple drag-and-drop operations. We chose to extend the open source JOSM (Java OpenStreetMap editor) application.
Thanks to an easily understandable GUI, our proposed tool can make any OpenStreetMap contributor capable of enriching maps along the Semantic Web/Linked Open Data vision, because no specific knowledge of Semantic Web languages and underlying logic-based formalisms is required.