To get started with data wrangling, we recommend checking out the tools and courses at School of Data.

• Orange http://orange.biolab.si/
• Weka http://www.cs.waikato.ac.nz/ml/weka/
• R http://www.r-project.org/
  • also see Try R, RStudio, R manual, cheat sheet, Stat Methods
• Weave http://www.oicweave.org
• Tableau (tableausoftware.com - see open data tutorial, statistical insights and Tableau Public)
• Freebase (http://www.freebase.com/)
• Google Public Data (http://www.google.com/publicdata/directory)
• Google Fusion Tables (http://www.google.com/fusiontables/Home )
• Wolfram Alpha Pro (wolframalpha.com, blog post)
• Many Eyes (http://www-958.ibm.com/software/data/cognos/manyeyes/ )
• NovoSpark (novospark.com)
• Gephi (http://gephi.org/ )
• Outwit (http://www.outwit.com/)
• Time Flow (http://flowingmedia.com/timeflow.html )
• Google Visualizations (code.google.com) - a collection of graphing widgets
• Graphviz (http://graphviz.org/ )
• Cytoscape (http://www.cytoscape.org/) - for complex network visualizations
• Open Heat Map (http://www.openheatmap.com/)
• Google Refine (http://code.google.com/p/google-refine/ )
• DataWrangler (http://vis.stanford.edu/wrangler/ )
• Quantum Gis (http://www.qgis.org/ )
• GeoCommons (http://geocommons.com/ )
• RStudio (http://www.rstudio.org/ )
• NodeXL (http://nodexl.codeplex.com/ ) Network Overview, Discovery and Exploration for Excel
• ZingCharts (http://www.zingchart.com/ ) Create HTML5/Flash/ SVG charts
• IfThisThenThat (http://ifttt.com/ )
• DERI Pipes (http://pipes.deri.org/ )
• Microsoft PowerPivot (microsoft.com)
• Stamen Dotspotting (http://dotspotting.org/)
• Afterquery (http://afterquery.appspot.com/help)

• Dafizilla Table2Clipboard (Firefox)
• Scraper (Chrome)
• Table Capture (Chrome)
• Data Toolbar (IE)