TopBraid Composer, the commercial Eclipse-based ontology editor developed by Holger Knublauch and colleagues at TopQuadrant, supports D2RQ in its latest release.
A common request from our customers is the ability to reuse existing (legacy) databases in the context of an RDF/OWL project. The mapping of relational databases into RDF is non-trivial and since I am not at all an expert on databases, I turned to the Web to find help. From some other entry on Planet RDF, I dimly remembered that Chris Bizer has been working on this, and linked from his pages I discovered D2RQ.
TopBraid and D2RQ are both Jena-based, so integrating them was not hard.
Now we can browse D2RQ-mapped database content in a nice GUI, and use a professional ontology editor to customize D2RQ mapping files. Pretty cool!
Congrats, Richard!