Check and Visualize your RDF documents.
RDFValidator-NG is basically the code at http://dev.w3.org/cvsweb/java/classes/org/w3c/rdf/examples/ARPServlet.java (which currently runs http://www.w3.org/RDF/Validator/. This version makes very easy to run the service locally.
How to start geeking
You only a recent version of Java (tested with Java 8). If you want to generate images for the graphs you provide, please install GraphViz. You'll also need a recent version of sbt.
git clone git://github.com/w3c/rdfvalidator-ng.git cd rdfvalidator-ng sbt assembly java -jar target/scala-2.11/rdf-validator.jar 8080
Then you can go to http://localhost:8080.
This source code is made available under the W3C Licence.