The Swignition Project
Swignition (formerly known as Cognition) is a parser for both “upper case Semantic Web” (RDF, RDFa) and “lower case semantic web” (microformats) technologies. It includes modules for exporting parsed data in a variety of formats, including RDF, vCard, iCalendar, Atom and KML.
Swignition is written in Perl 5 (and some small parts in ECMAScript) and licensed under the GNU GPL (v3).
The primary author of Swignition is Toby Inkster.