After a recent large automotive win, SimPack has revitalized its position providing multi-body simulation.
With core strengths in kinematics and dynamics: pre-processing, solving, and post-processing, SimPack can be tailored to suite specialties within aero, auto, rail, and other industries.
Available on Windows and a couple flavors of Linux, SimPack ties into CATIA and Pro/E. These are not exactly mass-market mid-range CAD tools, so there is plenty of room for improvement in making SimPack viable to a larger audience. Then again, these are target solutions to a target market and pricing may dictate more than function. How many other simulation tools provide a "black box" s-function block into Matlab/Simulink?
SimPack has proven they have the right tools for the job. I wouldn't mind taking a look at the software to see how it compares with other kinetics and dynamics tools. But, with what appears to be a limited scope to their applications and a narrow target market, I don't know if SimPack will ever grow into being a household name in the wider audience of mid-range CAD and simulation users.