• Open Data Repository der Statistik Stadt Zürich
• Federal Geoportal - (English, French ) -API docs
• geocat.ch - Swiss Geographic Catalogue
• Web Services of the Swiss Parliament
• SBB API, semi-official, see http://pastie.org/1617103 for usage
• Wassertemperaturen von Schweizer Flüssen
  • Data API on Pachube (by Danilo)
• api.politnetz.ch (you can use this token: opendata. And do not hesitate to contact us if you are interested in different data)
• Services web cartographiques ArcGIS Server et WMS
• BADAC Datenbank über die Schweizer Kantone und Städte
• Befreite Dokumente (www.oeffentlichkeitsgesetz.ch)

Have a look to the CKAN make.opendata.ch repository.

• Planet Data
• PublicData.eu
• List of European data catalogues
• Open Data Ireland
• Open Gov't Data UK

• CKAN.org
• Data.gov (USA)
• Open Data Hubs worldwide (buzzdata)

• 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 )