Pentaho (Open Source Business Intelligence Tool)
Available in Community (free) and Enterprise(payware) versions. Java-based (Tomcat & MySQL). Includes Analysis (Mondrian) and ETL/Data Integration (Kettle) modules. Has GUI-based tools for design and execution of dashboards, reports, graphs and transformations. Kettle can also be used separately to transform file and data formats.
Posted from Diigo. The rest of my favorite links are here.