Die Suchmaschine Core wirbt mit dem Slogan “The world’s largest collection of open access research papers”. Die Liste der “Data Providers” zeigt, woher die Daten kommen (via bibliotheksdaten.de):
«CORE’s mission is to aggregate all open access research outputs from repositories and journals worldwide and make them available to the public. In this way CORE facilitates free unrestricted access to research for all.»