SpagoBI is the most comprehensive free open source platform for the development of Business Intelligence projects in an integrated environment. SpagoBI is an integration platform focused on business intelligence needs at the enterprise level: it offers a full analytical layer (reporting dimensional analysis - OLAP, data mining, dashboards, free and visual data inquiring, collaborative modules) with several solutions for every area, allowing the end-user to compose the platform that suites him/her best, also mixing open source and proprietary products in order to maximize the overall ROI. SpagoBI goes further than other open source projects, because it provides a unified view both for data access and for user interaction. Its simple extensibility makes new integration very easy and for this reason, SpagoBI is a natural choice for users looking for a unified open source platform for business intelligence.