The German Truck Simulator modding community is active and vibrant, with many resources available online. Here are some popular communities and resources:
Contrary to popular belief, you can expand GTS. While not as massive as ETS2's ProMods, map mods for GTS open up Eastern Europe, parts of France, and detailed reconstructions of cities like Berlin and Hamburg with proper ring roads. german truck simulator mod
What is the (e.g., a truck, a map, a sound pack)? Where is this being posted (Discord, a forum, a blog)? The German Truck Simulator modding community is active