Processing.org. Gallery. ProgrammableWeb - Mashups, APIs, and the Web as Platform. Overview — NetworkX. Natural Language Toolkit | Free software downloads. BigQuery. Data Wrangler. UPDATE: The Stanford/Berkeley Wrangler research project is complete, and the software is no longer actively supported. Instead, we have started a commercial venture, Trifacta. For the most recent version of the tool, see the free Trifacta Wrangler.
Why wrangle? Too much time is spent manipulating data just to get analysis and visualization tools to read it. Wrangler is designed to accelerate this process: spend less time fighting with your data and more time learning from it. Wrangler allows interactive transformation of messy, real-world data into the data tables analysis tools expect. OpenRefine. Quadrigram.
Gephi, an open source graph visualization and manipulation software. Datavisualization.ch Selected Tools. United Kingdom. The top 20 data visualisation tools. Maps. Data finders. Many Eyes - IBM.