MapleSim 4 is the latest release of Maplesoft’s high-performance physical modeling and simulation tool. Introducing a new 3-D construction feature that saves engineers time when developing multibody models, this release of MapleSim provides instant, realistic feedback by dynamically rendering the model as it is built. In addition, the 3-D construction environment lets engineers add and manipulate multibody components directly in the 3-D workspace. Other new features include flexible probe management tools, including an easy way to add new probes to previous simulation results without having to rerun the simulation; a new semi-stiff solver that provides good results for stiff systems without the overhead formulation costs of a true stiff solver; and new and enhanced analysis tools, including tools for working with multibody equations. Maplesoft has simultaneously released Maple 14, the technical computing software for engineers, mathematicians, and scientists.