@green träwelling is a website with which you can track your train journeys and share it with your friends and others and those following your account (by default, it's public, but you can set your own default setting and edit it after the fact). :3
it covers everything that the DB HAFAS knows (the HAFAS is that internal train schedule system that keeps track of all the journeys (in this case) in Germany and some connections leading outside of Germany) and yeah c:
@jeder@green yeah I noticed that, and ngl I was impressed when I took the TLK 18171 from Kostrzyn towards Warsaw for the first time- (yep it was a TLK at that time, it got upgraded to an IC though at some point in December) (though I was then disappointed when there weren't any of Warsaw's local trams, buses and metro trains in there)