re3data.org is an interesting project aiming to create a global registry of research data repositories. As they manifest, “The registry will cover research data repositories from different academic disciplines. re3data.org will present repositories for the permanent storage and access of data sets to researchers, funding bodies, publishers and scholarly institutions. In the course of this mission re3data.org aims to promote a culture of sharing, increased access and better visibility of research data.”
As a first toward this goal, they have launched a vocabulary to describe Research Data Repositories online which can be found at: http://dx.doi.org/10.2312/re3.001.