ScraperWiki
http://www.journalismaccelerator.com/resources/scraperwiki/
A collection of tools for Web scraping, data mining and visualization.
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Crowdmap
http://www.journalismaccelerator.com/resources/crowdmap
Collect, aggregate, then visualize on a map and timeline. Crowdmap is free, designed to help you “monitor elections, map crisis information, curate local resources, document a zombie invasion.”
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Tableau Public
http://www.journalismaccelerator.com/resources/tableau-software/
Tableau Public is a free service that you can download to create and publish interactive data visualizations to the web. You don’t need to be a programmer or hire one – no language to learn, no Flash, no plug-ins and no API.