If you want to drive a Berlin bus with the livery of London Transport or a bus from New York City, you need "Repaints." These are texture files that change the paint job of a bus model without changing the 3D model itself.
This is the most popular category. Users can download buses ranging from the 1960s classics to modern hybrid vehicles. omsi 2 downloads
Several community-run sites aggregate popular mods. These are excellent for finding "best of" lists or English-translated versions of German mods. If you want to drive a Berlin bus