WikiData – Free KnowledgeBase With 15,819,145 Editable Data Items
http://www.wikidata.org/wiki/Wikidata:Main_Page

Wikidata is a free linked database that can be read and edited by both humans and machines. Wikidata acts as central storage for the structured data of its Wikimedia sister projects including Wikipedia, Wikivoyage, Wikisource, and others. Wikidata also will provide support to many other sites and services beyond just Wikimedia projects! The content of Wikidata is available under a free license, exported using standard formats, and can be interlinked to other open datasets on the linked data web. This will be added to the tools section of Research Resources Subject Tracer™ Information Blog. This will be added to Statistics Resources and Big Data Subject Tracer™. This will be added to Entrepreneurial Resources Subject Tracer™.