"Rhizome is a Wiki-like content management and delivery system that exposes the entire site -- content, structure, and metadata as editable RDF...nstead of just creating a site with URLs that correspond to a page of HTML, with Rhizome you can create URLs
"Pyrple parses RDF/XML, N3, and N-Triples. It has in-memory storage with API-level querying, experimental marshalling, many utilities, and is small and minimally interdependent. It can do graph isomorphism testing, rule application, etc."