Triplify is complemented by a lightweight registry for RDF data sources. RDF data sources can simply register via accessing http://triplify.org/Registry/?url=url_of_rdf_source (a parameter vocabulary can optionally be used to refer to the vocabulary used). The complete list of the registered data sources is available as a Triplify data source. The registry is a simple way to discover RDF data sources (using a certain vocabulary). Registered data sources are also automatically submitted to Semantic Web search engines and indexes (e.g. PTSW). Most Triplify instances should be able to register automatically. If you want to submit your RDF data source manually, please provide the URL in the following form.