• Swiss public transport API
• Federal Geoportal - (English, French ) -API docs
• Cantons and Municipalities Geodata (interactivethings)
• OpenStreetMap.ch - mapping community
• Kartenportal.ch - formerly ETHZ World of Maps
• GeoCat.ch - Swiss Geographic Catalogue
• Geodaten der Bundesstatistik
• BADAC Database of Swiss Cantons and Towns
• Swiss Postcodes - PLZ-Verzeichnis

By region:

• Canton of Geneva (SITG)
• Canton of Bern
• Canton of Zürich
• Canton of Glarus

• OpenStreetMap
• MapBox
• GeoNames
• NASA Global Maps
• Microsoft Bing Maps
• Google Maps

• United Nations Environmental Data