Anything To Triples (any23) is a library, a web service and a command line tool that extracts structured data in RDF format from a variety of Web documents.
Christian Bizer, Kai Eckert, Robert Meusel1, Hannes Mühleisen, Michael Schuhmacher1, and Johanna Völker1
Deployment of RDFa, Microdata, and Microformats on
the Web – A Quantitative Analysis
Linked Data in Use Track - ISWC 2013