Topaz

From semanticweb.org

Topaz
www.topazproject.org/
Status:	alpha
Last release:	0.8.3 (April 4, 2008)
License:	Apache 2.0 License
Affiliation:	Topaz

Topaz is a powerful object to RDF persistence and query service. Based loosely on the ORM family of software, Topaz lets you develop persistent classes following object-oriented concepts such as inheritance, composition, association, etc. Besides allowing use of the underlying RDF store's native query language, Topaz provides its own language (OQL), which applications can utilize to query based on defined objects.