Jena is a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine.
The OWL API is a Java API and reference implmentation for creating, manipulating and serialising OWL Ontologies. The latest version of the API is focused towards OWL 2
M. Horridge, T. Tudorache, C. Nyulas, and M. Musen. OWL: Experiences and Directions Workshop (OWLED), volume 1265 of CEUR Workshop Proceedings, page 109-120. CEUR-WS.org, (2014)
P. Monachesi, L. Lemnitzer, and K. Simov. Proceedings of the European Conference on Technology Enhanced Learning (EC-TEL 2006), volume 4227 of Lecture Notes in Computer Science, page 667-672. Springer, (2006)
R. Hoekstra, J. Breuker, M. Bello, and A. Boer. Proceedings of the Workshop on Legal Ontologies and Artificial Intelligence Techniques (LOAIT 2007), (June 2007)
Y. Raimond, S. Abdallah, M. Sandler, and F. Giasson. Proceedings of the 8th International Conference on Music Information Retrieval (ISMIR 2007), page 417--422. Vienna, Austria, (September 2007)
B. Grossof, I. Horrocks, R. Volz, and S. Decker. Proceedings of the 12th International World Wide Web Conference (WWW 2003), Budapest, Hungary, (May 2003)
F. Baader, S. Brand, and C. Lutz. International Joint Conference on Artificial Intelligence (IJCAI) 2005, page 364--369. Morgan-Kaufmann Publishers, (2005)
I. Horrocks, O. Kutz, and U. Sattler. Proceedings of the 10th International Conference on Principles of Knowledge Representation and Reasoning, page 57-67. AAAI Press, (2006)
I. Horrocks, and P. Patel-Schneider. Proceedings of the Twelfth International World Wide Web Conference (WWW2003), page 39--47. Budapest, Hungary, ACM, (2003)
F. Bry, F. Fages, M. Marchiori, and H. Ohlbach. Principles and Practices of Semantic Web Reasoning, volume 05371 of Dagstuhl Seminar Proceedings, Internationales Begegnungs- und Forschungszentrum für Informatik (IBFI), Schloss Dagstuhl, Germany, (2005)
V. Chaudhri, W. Jarrold, and J. Pacheco. OWL: Experiences and Directions Workshop (OWLED), volume 216 of CEUR Workshop Proceedings, CEUR-WS.org, (2006)
G. Guizzardi. Conference on Advanced Information Systems Engineering (CAiSE), volume 6741 of Lecture Notes in Computer Science, page 138-153. Springer, (2011)
A. Miles, B. Matthews, M. Wilson, and D. Brickley. Proceedings of the 2005 international conference on Dublin Core and metadata applications, page 1--9. Madrid, Spanien, Dublin Core Metadata Initiative, (2005)
V. Presutti, and A. Gangemi. Proceedings of the 27th International Conference on Conceptual Modeling (ER2008), page 128--141. Berlin, Heidelberg, Springer-Verlag, (2008)
S. Bechhofer, R. Volz, and P. Lord. he Semantic Web -- ISWC 2003: Second International Semantic Web Conference, page 659--675. Sanibel Island, FL, USA, Springer, (2003)