Registry of Research Data Repositories (re3.data) - re3data.org is a global registry of research data repositories that covers research data repositories from different academic disciplines. It presents repositories for the permanent storage and access of data sets to researchers, funding bodies, publishers and scholarly institutions
FairSharing.org - A curated educational resource on data and metadata standards, inter-related to databases and data policies.
What is a Data Repository? -From https://www.techopedia.com/definition/23341/data-repository
"Data repository is a somewhat general term used to refer to a destination designated for . However, many IT experts use the term more specifically to refer to a particular kind of setup within an overall IT structure, such as a group of databases, where an enterprise or organization has chosen to keep various kinds of data."