Datasets - Mannheim Linked Data Catalog

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
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).