Sesame is an open-source framework for querying and analyzing RDF data. It was created, and is still being maintained, by the Dutch software company Aduna. It was originally developed as part of the "On-To-Knowledge", a semantic web project that ran from 1999 to 2002. It contains a triplestore. One of the primary components of Sesame is the RDF query language SeRQL. Another component is Elmo, an API that allows for querying of specific ontologies like RSS, FOAF and Dublin Core.