Open source data visualization and analysis for novice and experts. Data mining through visual programming or Python scripting. Components for machine learning. Extensions for bioinformatics and text mining. Packed with features for data analytics.
TLA-team: Visualization and analysis of quantative data with suppor with a focus on bio-informatics (but plenty of generic modules). Easy to specify data processing chains. Processing on the fly. Promising, but does not seem entirely stable yet.