A free software / Open Source C library, the Raptor RDF Parser Toolkit features:
A parser for the multiple XML RSS formats that use the elements such as channel, item, title, description in different ways. Attempts to turn the input into RSS 1.0 RDF triples. True RSS 1.0, as a full RDF vocabulary, is best parsed by the RDF/XML parser. It also generates triples for RSS enclosures.
This parser also handles the Atom 0.3 syndication format currently being standardised by the IETF Atom Publishing Format and Protocol working group.
Also includes serializers for RDF/XML, N-Triples and RSS 1.0.