'''AllegroGraph''' is a closed source [[triplestore]] which is designed to store [[Resource Description Framework|RDF]] [[Semantic triple|triples]], a standard format for [[Linked Data]].<ref>{{cite news|last1=Claburn|first1=Thomas|title=Web 2.0 Arrives to Find Web 3.0 Underway|url=http://www.drdobbs.com/web-development/web-20-arrives-to-find-web-30-underway/199001127|accessdate=22 September 2015|work=Dr. Dobb|publisher=UBM Tech|date=16 April 2007}}</ref>
AllegroGraph is currently in use in commercial projects<ref>[http://franz.com/agraph/cresources/white_papers/BioInform_mar3_Pfizer-Partners-with-IO-Franz_on-Semantic-Proof-of-Concept.pdf GenomeWeb-Pfizer Article]</ref><ref>[http://www.iscb.org/cms_addon/conferences/cshals2009/presentations/GudivadaCFeb09.pdf Eli Lilly Project Presentation]</ref><ref>[{{Cite web |url=http://www.semanticweb.com/news/making_a_semantic_web_business_case_at_pfizer_161731.asp |title=Making a Semantic Web Business Case at Pfizer] |access-date=2010-05-18 |archive-url=https://web.archive.org/web/20100627015730/http://www.semanticweb.com/news/making_a_semantic_web_business_case_at_pfizer_161731.asp |archive-date=2010-06-27 |dead-url=yes |df= }}</ref><ref>{{cite book|last1=Society|first1=IEEE Computer|title=Proceedings, IEEE International Conference on Semantic Computing 2008 ICSC 2008 : 4-7 August 2008, Santa Clara, California.|date=2008|publisher=IEEE Xplore|___location=[Piscataway, N.J.]|isbn=978-0-7695-3279-0|}}</ref> and a Department of Defense project.<ref>[http://c4i.gmu.edu/OIC09/papers/OIC2009_4_SchragEtAll.pdf Contributions to a Semantically Based Intelligence Analysis Enterprise Workflow System]</ref> It is also the storage component for the TwitLogic project<ref>[http://events.linkeddata.org/ldow2010/papers/ldow2010_paper16.pdf TwitLogic Paper]</ref> that is bringing the [[Semantic Web]] to [[Twitter]] data.<ref>{{cite journal|last1=Snoek|first1=C.G.M.|last2=Huurnink|first2=B.|last3=Hollink|first3=L.|last4=de Rijke|first4=M.|last5=Schreiber|first5=G.|last6=Worring|first6=M.|title=Adding Semantics to Detectors for Video Retrieval|journal=IEEE Transactions on Multimedia|date=August 2007|volume=9|issue=5|pages=975–986|doi=10.1109/TMM.2007.900156|url=http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=4276717&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D4276717|accessdate=22 September 2015}}</ref>
