|[AVV](https://avv.de) |HAFAS ReST API |usage agreement |[OPENDATA](https://avv.de/de/fahrplaene/opendata-service)
|[VRS](https://www.vrs.de/) |GTFS |usage agreement |[VRS Open Data /Open Service](https://www.vrs.de/fahren/fahrplanauskunft/opendata-/-openservice)
|[VRS](https://www.vrs.de/) |GTFS Realtime |usage agreement |[VRS Open Data /Open Service](https://www.vrs.de/fahren/fahrplanauskunft/opendata-/-openservice)
|[VRS](https://www.vrs.de/) |ASS |usage agreement |[VRS Open Data /Open Service](https://www.vrs.de/fahren/fahrplanauskunft/opendata-/-openservice)
|[VRS](https://www.vrs.de/) |TRIAS |usage agreement |[VRS Open Data /Open Service](https://www.vrs.de/fahren/fahrplanauskunft/opendata-/-openservice)
|[VVS](https://www.vvs.de/) |GTFS |open data |[URL](https://www.openvvs.de/dataset/e66f03e4-79f2-41d0-90f1-166ca609e491/resource/bfbb59c7-767c-4bca-bbb2-d8d32a3e0378/download/google_transit.zip)
|[VVS](https://www.vvs.de/) |TRIAS |usage agreement and user account |[API](https://openvvs.de/pages/api)