Datasets - Mannheim Linked Data Catalog

B3Kat - Library Union Catalogues of Bavaria, Berlin and Brandenburg

Joint Union Catalogue of 180 academic libraries in the german states of Bavaria, Berlin and Brandenburg. The data contains descriptions of 25Mio. titles and 58Mio. holdings...
HeBIS - Bibliographic Resources of the Library Union Catalogues of Hessen and...

This site contains links to metadata about all types of publications (print media, E-books, E-journals,online resources) originating from the central union database of HeBIS....
Organisation for Economic Co-operation and Development (OECD) Linked Data

OECD data and metadata for OECD countries and selected non-member economies.
Food and Agriculture Organization of the United Nations (FAO) Linked Data

Food and Agriculture Organization of the United Nations datasets and classifications.
International Monetary Fund (IMF) Linked Data

IMF data and metadata
European Central Bank (ECB) Linked Data

ECB data and metadata
Federal Reserve Board (FRB) Linked Data

FRB data and metadata
Bundesamt für Statistik (BFS) - Swiss Federal Statistical Office (FSO) Linked...

Bundesamt für Statistik - Swiss Federal Statistical Office data. Currently contains only the classifications.
UNESCO Institute for Statistics (UIS) Linked Data

UIS data and metadata

You can also access this registry using the API (see API Docs).