It’s a sort of group that creates projects for Simutrans, related with France, and focus mainly on trains, maglev, buildings and attractions. The most famous project hosted there right now is the MLM train, created by gauthier but they’re also developing a set of high speed french trains.
If you want to join SNFOS and participate in project’s development or submit your project on the site, contact with the administrator (see Contact link)
Visit SNFOS at www.simutrans-france.fr.nf