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Developer(s) Franz Inc.
Stable release
5.0.1[1] / February 28, 2015; 18 months ago (2015-02-28)
Written in Common Lisp
Operating system Microsoft Windows (32 and 64-bit), Mac OS X (Intel, 32 and 64-bit), Linux (32 and 64-bit)
License Proprietary commercial software
Website Franz, Inc.

AllegroGraph is a closed source triplestore which is designed to store RDF triples, a standard format for Linked Data.[2] AllegroGraph is currently in use in Open source projects,[3] commercial projects[4][5][6][7] and Department of Defense projects.[8] It is also the storage component for the TwitLogic project[9] that is bringing the Semantic Web to Twitter data.[10]


AllegroGraph was developed to meet W3C standards for the Resource Description Framework, so it is properly considered an RDF Database. It is a reference implementation for the SPARQL protocol.[11] SPARQL is a standard query language for linked data, serving the same purposes for RDF databases that SQL serves for relational databases.[12]

Franz, Inc. is the developer of AllegroGraph. It also develops Allegro Common Lisp, an implementation of Common Lisp, a dialect of Lisp (programming language). The functionality of AllegroGraph is made available through Java, Python, Common Lisp and other APIs.[13]

The first version of AllegroGraph was made available at the end of 2004.[14]


AllegroGraph has client interfaces for Java, Python, Ruby, Perl, C#, Clojure, and Common Lisp. The product is available for Windows, Linux, and Mac OS X platforms, supporting 32 or 64 bits.[citation needed]

AllegroGraph includes an implementation of Prolog based on the implementation developed by Peter Norvig in Paradigms of Artificial Intelligence Programming.[15][non-primary source needed]

See also[edit]


  1. ^ Woodie, Alex (26 August 2015). "Medical Insight Set to Flow from Semantic Data Lakes". Datanami. Retrieved 22 September 2015. 
  2. ^ Claburn, Thomas (16 April 2007). "Web 2.0 Arrives to Find Web 3.0 Underway". Dr. Dobb. UBM Tech. Retrieved 22 September 2015. 
  3. ^ Glahn, Janine. "DBPedia Deutschland 1.0 Release – The German part of the Wikipedia for Machines". Archived from the original on 27 July 2013. Retrieved 23 September 2015. 
  4. ^ GenomeWeb-Pfizer Article
  5. ^ Eli Lilly Project Presentation
  6. ^ Making a Semantic Web Business Case at Pfizer
  7. ^ Society, IEEE Computer (2008). Proceedings, IEEE International Conference on Semantic Computing 2008 ICSC 2008 : 4-7 August 2008, Santa Clara, California. [Piscataway, N.J.]: IEEE Xplore. ISBN 978-0-7695-3279-0. 
  8. ^ Contributions to a Semantically Based Intelligence Analysis Enterprise Workflow System
  9. ^ TwitLogic Paper
  10. ^ Snoek, C.G.M.; Huurnink, B.; Hollink, L.; de Rijke, M.; Schreiber, G.; Worring, M. (August 2007). "Adding Semantics to Detectors for Video Retrieval". IEEE Transactions on Multimedia. 9 (5): 975–986. doi:10.1109/TMM.2007.900156. Retrieved 22 September 2015. 
  11. ^ SPARQL Protocol Implementation Report
  12. ^ R, Angles (2012). 2012 IEEE International Conference on Data Engineering Workshops. Piscataway: IEEE. ISBN 978-1-4673-1640-8. 
  13. ^ Watson, Mark (2009). Scripting intelligence : Web 3.0 information gathering and processing (New Edition. ed.). Berkeley, CA: Apress. ISBN 9781430223511. 
  14. ^ Watson, Mark (2009). Scripting intelligence : Web 3.0 information gathering and processing (New Edition. ed.). Berkeley, CA: Apress. ISBN 9781430223511. 
  15. ^ Allegro Prolog

External links[edit]