—In March 2013, the W3C recommended SPARQL 1.1 to retrieve and manipulate decentralized RDF data. Real-world usage requires advanced features of Recommendation SPARQL 1.1. As these are not consistently implemented, we propose a software named TFT (Tests For Triplestores) to test the interoperability of the SPARQL endpoint of RDF database sys-tems. To help the developers and end-users of RDF databases, we perform daily tests daily on Jena-Fuseki, Marmotta-KiWistore, 4Store and three other commercial databases. With these tests, we have built a scoring system named SPARQLScore and share our results on the website http://sparqlscore.com.