TruckMaker is a real-time simulation solution specifically tailored to the requirements relevant for the development and testing of heavy-duty vehicles such as trucks, construction vehicles, buses, semi-trucks, heavy-duty semi-trucks, and special vehicles. TruckMaker enables the accurate modeling of real-world test scenarios in the virtual world and increases the agility of development processes. In accordance with the automotive systems engineering approach, virtual test driving with TruckMaker enables the seamless development, calibration, testing, and validation of entire systems across the whole vehicle in realistic scenarios. TruckMaker offers a high-performance, real-time capable vehicle model to build virtual prototypes already during the early stages of the development process. Users have the option to replace components with their own models or hardware.