I don't know about a full european one, it would need cooperation and shared information from all the countries, which is feasible, but I don't know if they would consider it (effort for something that isn't profitable for them, probably)
Pfft. German train company don’t even talk to each other!
There is also https://www.map.signalbox.io/ for the British mainland (not sure if it's the right word, I'm not from there).
There are several!