A friend of mine started to reverse engineer the API, that the DB-Navigator App uses, as it covers pretty much every public transport in Germany and at least tr

A friend of mine started to reverse engineer the API, that the DB-Navigator App uses, as it covers pretty much every public transport in Germany and at least trains (and sometimes trams and buses) in all of Europe. It can even give you a route to Pjönyang, North Korea. I don't know how successful he has, though.