Very new site just opened by a freind of Rotabili Italiani website.
Includes some news in italian regarding TS and TSW. In some way connected to a Facebook group of fan.

Maybe the larger site/forum regarding TS. You can find there a lot of usefule hints and info’s.

Swiss site with Shop. Also dedicated hardware is sold there.

Nice spanish website, with good presentation and info.

Wide german site on train simulation, very useful information there, even if only in german language.

German webiste specialized in MSTS