Apache Mahout - Distributed Linear Algebra
Dotmatics Vortex - Decision Making Software for Scientific Data
WEKA - WEKA is a set of powerful data mining tools that run on Java.
TIBCO Spotfire - TIBCO Spotfire is a Business Intelligence (BI) solution that provides users with executive dashboards, data visualization, data analytics and KPIs push to mobile devices.
KNIME - KNIME, the open platform for your data.
Tableau - Tableau can help anyone see and understand their data. Connect to almost any database, drag and drop to create visualizations, and share with a click.