OPENDATA Paris is the opendata initiative of the city of Paris. It provides numerous datasets about the city in many fields: real estate, maps, political organisation, townhouse, budgeting and other fields
The European Central Bank provides extensive statistics about the economy of the European Union and its member states. Currency Exchanges, Banking statistics, Trade balances are some of the data sets available from this source.
The world bank provides open data, for a free and open access to global development data. Numerous data can be found on various subjects such as economic development, demography, commodity prices and markets, infrastructure.