* DataHub.io * Open Data sites around the World (data.gov) * Open Data Hubs worldwide (buzzdata) * Planet Data.eu * PublicData.eu * List of European data catalogues * Open Data Ireland * Open Gov't Data UK * French data-gov.fr citoyen * Canadian Open Data portal

* Pachube * InfoChimps * Data Marketplace * Factual

• NYC.gov/data - New York City
• dataSF.org - San Francisco
• data.wien.gv.at - Vienna
• daten.berlin.de - Berlin, Germany (apps )
• data.london.gov.uk - London, UK (apps )
• opendata.paris.fr - Paris, France (apps )
• toronto.ca/open - Toronto, Canada (apps )
• montrealouvert.net - Montréal, Canada (apps )