dev.hel.fi

Geoserver

Hosts various geospatial datasets: implements WMS and WFS

Infopankki

Infopankki API provides interface to content of infopankki.fi website

Kore

Kore API contains the complete Helsinki school history database operated by the City Archives. It is used by https://koulurekisteri.hel.fi.

Linked Events

Aggregates data about events around the city

Open311

An API for reporting issues and giving feedback

OpenAhjo

Decision data like meetings, agendas, and decisions

Respa

An API for making resource reservations, such as booking a practice room or a meeting space

Service Map Backend API

Provides service point data with advanced filtering for interactive service point applications

Snowplows

The snowplow API allows querying the real-time and historical locations of snowplows in the Helsinki area.

Statistics

Query the city's statistical databases