RDFa

There are a number of RDFa implementations.

Python

• RDFa Distiller
  Author: Ivan Herman
  http://www.w3.org/2007/08/pyRdfa/
• rdfadict
  Author: Nathan Yergler
  http://pypi.python.org/pypi/rdfadict
• rdflib
  Author: Elias Torres
  http://svn.rdflib.net/trunk/rdflib/syntax/parsers/RDFaParser.py

PHP

• ARC 2
  Author: Benjamin Nowack (semsol)
  http://arc.semsol.org/download
• RDFa Monkey
  Author: Ruben Thys
  http://www.avthasselt.sohosted.com/rdfamonkey/

XSLT

• RDFa2XSLT
  Author: Fabien Gandon
  http://ns.inria.fr/grddl/rdfa/

JavaScript

• RDFa Bookmarklets
  Author: Ben Adida
  http://www.w3.org/2006/07/SWD/RDFa/impl/js/

Ruby

• RDFa on Rails
  Author: Cédric Mesnage
  http://rdfa.rubyforge.org/
• ruby-rdfa
  Author: Benjamin Lyu
  http://code.google.com/p/ruby-rdfa/

C/C#

• librdfa
  Author: Manu Sporny
  http://rdfa.digitalbazaar.com/librdfa/