transport
SBB, PostBus, trams, live departures, journey planning
weather
MeteoSwiss live conditions + historical data
hydrology
BAFU river & lake levels (great for Aare swimming!)
geodata
swisstopo geocoding, solar potential, geographic layers
companies
ZEFIX federal registry, all 700K+ Swiss companies
holidays
Swiss public & school holidays by canton
parliament
Bills, votes, members, speeches, cantonal affairs (OpenParlData.ch)
avalanche
SLF danger bulletins and warning regions
air_quality
NABEL stations, Swiss legal limits (LRV)
swiss_post
Postcode lookup and parcel tracking
energy
Electricity tariffs by municipality (ElCom)
statistics
Population, demographics, BFS datasets
snb_rates
Swiss National Bank CHF exchange rates, historical data
recycling
Zurich city waste collection calendar (OpenERZ)
swiss_news
SRF news headlines and keyword search
voting
Swiss popular vote results (Basel-Stadt open data)
dams
Swiss federal dam registry (SFOE/swisstopo)
hiking
Swiss trail closures and hiking alerts (swisstopo)
real_estate
Swiss property prices, rent index, housing data (BFS)
traffic
ASTRA counting stations, daily volumes
earthquakes
Swiss Seismological Service (SED/ETH Zürich), FDSN API