The Repository component of the ARIADNE infrastructure.
ARIADNE has created a standards-based technology infrastructure that allows the publication and management of digital learning resources in an open and scalable way. The vision that drives the continuous development of this infrastructure is to provide flexible, effective and efficient access to large-scale educational collections in a way that goes beyond what typical search engines provide. ARIADNE was initially set up by a network of European stakeholders, expanding now into a global network of member institutions sharing the same vision.
You can find more information on the ARIADNE Foundation web site.