I used to have an app that displayed, for each TS route installed on my computer, the route map, a list of installed scenarios, and, I think, other information that I've forgotten. If anyone knows what I'm yammering about, please let me know what it's called and where to find it.
Found it! Nothing like answering one's own question: the app is called RWInfo and can be downloaded from https://www.10a.ch/rwinfo . The site is in German, but you' want the RWInfo V1.5.1 freigegeben download link.
