KNIME

KNIME is the Konstanz Information Miner: http://www.knime.org/

It looks like a workflow tool such as TAVERNA and seems to integrate R, Python, in an Eclipse-like environment....

KNIME FEATURES: http://www.knime.org/introduction/features

KNIME SCREENSHOTS: http://www.knime.org/introduction/screenshots

KNIME SCREENCASTS: http://www.knime.org/introduction/screencasts

Getting Started: http://www.knime.org/documentation/getting_started