Trenitalia upgraded most of their machines a few years ago, I don't think there are still OS/2 machines around for that. I was amazed the first time I saw one

Trenitalia upgraded most of their machines a few years ago, I don't think there are still OS/2 machines around for that. I was amazed the first time I saw one of these crashed, showing the OS/2 Logo (Warp 3 or 4 I think). From the GUI it was impossible to tell, they had relatively high resolution and even, at some point, videos embedded. I wonder who developed and updated the GUI, and using what.