ActiveOntology
ActiveOntology is a library, written in Ruby, for easy manipulation of RDF and RDF-Schema models, thru a dynamic DSL based on Ruby idiom.
example = RDF::Resource.new "http://www.example.org/index.html"
example.namespaces < "http://purl.org/dc/elements/1.1/"
example.dc_creator = RDF::Resource.new "http://www.example.org/staffid/85740"