This tool parses Turtle documents and shows the underlying, desugared representation of the RDF content. You can use it to inspect, debug, and learn the ins and outs of the Turtle syntax.
The deserialized RDF uses the low-level primitives and constructs from the RDF/JS data model.
RDF graphs - Intro to RDF graph visualization + demo.
Magic SPARQL endpoints - Instant triplestores for testing and exploration, prepopulated with the RDF/Turtle data that is inlined in the SPARQL endpoint URLs.