http://www.bbc.com BBC is one of the first organisations to use linked data, a strategy for connecting online content which helped to deliver its highly successful Olympics coverage. Here, some of the key players in the BBC’s linked data strategy explain how it gives BBC’s online audience the most comprehensive access to all its content.
http://schema.org Schema.org provides a collection of schemas, i.e., html tags, that webmasters can use to markup their pages in ways recognized by major search providers. Search engines including Bing, Google, Yahoo! and Yandex rely on this markup to improve the display of search results, making it easier for people to find the right web pages.
http://dbpedia.org/About DBPedia is a crowd-sourced community effort to extract structured information from Wikipedia and make this information available on the Web.
http://www.geonames.org Geonames is a geographical database available and accessible through various web services, under a Creative Commonsattribution license.
http://www.freebase.com Freebase is a community-curated database of well-known people, places and things. The formal owner Metaweb Technology was acquired by Google in 2010, Google's knowledge graph is powered in part by Freebase.
http://sindice.com Sindice is joint research project among DERI, Fondazione Bruno Kessler, OpenLink software.
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