Transport for Norway vs Transport for Paris, France

Entur is Norway's national registry for public transport data, aggregating schedules and real-time updates from 60+ operators (21,000 daily departures) behind a GraphQL Journey Planner API, plus SIRI real-time and NeTEx static feeds. Fully open and free of charge, keyless for read access, though Entur asks every consumer to self-identify with an ET-Client-Name header and reserves the right to rate-limit unidentified traffic; the old developer.entur.org portal is being retired in favor of 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.