Mac users interested in Rapidminer 5.3 generally download:
RapidMiner Studio is an easy-to-use visual environment for predictive analytics. Hundreds of data loading, data transformation, data modeling, and data visualization methods with access to a comprehensive list of data sources like Excel, Access, Oracle, IBM DB2, Microsoft SQL, Sybase, Ingres, MySQL, Postgres, SPSS, dBase, Text files, and more. You can also choose to run in batch mode.