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Freebase, created by Metaweb Technologies in 2006[1] (acquired by Google in 2010[2][3] and due to be phased out[4] then retired in 2015[5]), is an open database of the world’s information. It’s built by the community and for the community – free for anyone to query, contribute to, build applications on top of, or integrate into their websites.

By the time their public beta period wrapped up and they considered their platform "production-ready" in the summer of 2007, Freebase already covered millions of topics in hundreds of categories. Drawing from large open data sets like Wikipedia, MusicBrainz, and the SEC archives, it contains structured information on many popular topics, including movies, music, people and locations – all reconciled and freely available via an open API. This information is supplemented by the efforts of a passionate global community of users who are working together to add structured information on everything from philosophy to European railway stations to the chemical properties of common food ingredients.

By structuring the world’s data in this manner, the Freebase community is creating a global resource that will one day allow people and machines everywhere to access information far more easily and quickly than they can today. [6]


NOTE: Freebase will be shutdown as of July 2015, all data will be transferred to Wikidata and maintained by the WikiMedia foundation.

Wikidata is a project of the Wikimedia Foundation: a free, collaborative, multilingual, secondary database, collecting structured data to provide support for Wikipedia, Wikimedia Commons, the other Wikimedia projects, and well beyond that.[7]



Freebase BOT

The largest contributor to Freebase, BOT is a collector of information from sources all over the web, such as Wikipedia and IMDB.

Freebase RDF

Freebase OWL



Freebase ACRE



Example 1

Find all influences of Carl Jung:

   "influenced" : [],
   "influenced_by" : [],
   "name" : "Carl Jung",
   "peers" : [],
   "type" : "/influence/influence_node"





External Links


  1. wikipedia: Metaweb
  2. Google Acquires Metaweb:
  3. Google Acquires Metaweb To Make Search Smarter:
  4. When we publicly launched Freebase back in 2007, we thought of it as a "Wikipedia for structured data.":
  5. As previously announced [1], Freebase will be going read-only next Tuesday, March 31st. This means that the website will no longer accept edits and the MQL write API will be retired. Full decommissioning of Freebase API/Website in favor of "Google Knowledge Graph" was due for June 30th, 2015... pushed to August 30th, 2015:
  6. Freebase:
  7. Wikidata - Introduction:
  8. Google's Freebase To Close After Migrating To Wikidata -- Knowledge Graph Impact?:
  9. Introducing Mozilla Labs' Ubiquity - It Doesn’t Have to be This Way (An experiment into connecting the Web with language):
  10. Powerset demo pulling Freebase data, including influences:
  11. Wikidata Meets the Google Knowledge Graph:
  12. Freebase API Reference:

See Also

Semantic Web | YQL | Google