Transport for Norway vs Transport for Paris, France

Entur is Norway's national registry for public transport data. It combines schedules and real-time updates from more than 60 operators, with 21,000 departures a day. It offers a GraphQL Journey Planner at https://api.entur.io/journey-planner/v3/graphql, a REST geocoder (v3) for address and place lookups, SIRI real-time feeds, and NeTEx static feeds. Access is free and keyless for read use. Entur asks each consumer to add an ET-Client-Name header, and it may rate-limit traffic that doesn't. The old developer.entur.org portal still publishes API changes, but Entur will retire it once its content moves to developer.entur.no.

RATP's own open-data catalog (separate from the region-wide Île-de-France Mobilités PRIM portal), an Opendatasoft-hosted Explore API. Its 26 datasets cover per-station air quality readings, annual station entry-traffic counts, and points of interest such as defibrillators, water fountains, public toilets, and licensed nearby shops for the Paris metro, RER, tram, and bus network. No accessibility or network-reference dataset is published. Public dataset reads work anonymously with no key over the v2.1 Explore API.