Originally Posted by
BahrainLad
The closest thing I have found to FlightRadar is
https://carto.tchoo.net/ which has real-time traffic data for the entire French railway system.
For Finnish rail network there is also couple train tracking services, the national rail operator VR has
On Track providing information about passanger trains in traffic and rail enthusiasts have created even more complete service
Juliadata covering also cargo trains, although that is only available in Finnish language. And basicly both are more or less front ends for the open data provided by Fintrafic.