The Open Source release of the MOMIS Data Integration System.

MOMIS (Mediator EnvirOnment for Multiple Information Sources) is an Open Source Data Integration system able to aggregate data coming from heterogeneous data sources (structured and semistructured) in a semi-automatic way. DataRiver is a Spin-Off of the University of Modena and Reggio Emilia that has re-engineered the MOMIS system, and released its Open Source version both for commercial and academic use. The MOMIS system has been extended with a set of features to minimize the integration process costs, exploiting the semantics of the data sources and optimizing each integration phase. The Open Source MOMIS system have been successfully applied in several industrial sectors: Medical, Agro-food, Tourism, Textile, Mechanical, Logistics. This paper describes the features of the Open Source MOMIS system and how it is able to address real data integration challenges.