IMPETUS Solver is a modern software system developed to simulate extreme mechanics. Our main market is weapons effect simulations. Typical processes are blast loading and terminal ballistics. Among the users are companies developing weapons or protection and research and defence organisations. The system solves Newtons’ equations of motion within a non-linear finite element framework and explicit time integration complemented with algorithms to describe material behaviour as well as boundary and load conditions. We support all material classes, high explosive materials and provide full coupling between loading and structural response. Through IMPETUS Market we provide libraries of pre-calibrated material and threats.