Some Tools

Graphical Editors
eg, IsaViz (Xerox Research/W3C) or RDF Author (Univ. of Bristol)
RDF Environments (interpreters, etc)
Jena (for Java, includes OWL Lite reasoning), RDFLib (for Python)
Redland (in C, with interfaces to Tcl, Java, PHP, Perl, …)
Kowari (OWL aware layer on top of Jena, coming)
Sesame (RDF Schema based repository and querying facility)
for RDF:
for OWL: (in development)
Ontology converter (to OWL)

Look at the W3C pages for updated information!

Ivan Herman, W3C Head of OfficesBeijing, China, 12 November, 200329 (35)