Table 1 RDF/SPARQL libraries for each programming language

Ruby

ActiveRDF, RDF.rb

http://activerdf.org/ , http://ruby-rdf.github.com/rdf/

Java

Jena

http://jena.apache.org/

Python

RDFLib

http://www.rdflib.net/

Perl

PerlRDF

http://www.perlrdf.org/