VBS stands for Verilog Behavioral Simulator.
http://www.flex.com/~jching/
STARDIS models simulate complex, geographically distributed information systems. They allow system designers and assessors to predict performance, find weaknesses and justify requirements.
http://www.stardis.com
OpenTrack is a railway simulation tool developed at the Swiss Federal Institute of Technology. It is a catalyst for practical economic solutions to complex railway technology problems.
http://www.ivt.baug.ethz.ch/opentrack.html
Manufacturing, medical, and service simulation modeling.
http://www.promodel.com/
Center for Advanced Transportation Systems Simulation (CATSS). The theme of this center is to apply computer simulation, driving simulators, virtual reality, wireless communication and other advanced technologies to enhance the planning, design, operation, management, and safety of transportation systems.
http://catss.engr.ucf.edu/
Highpoint Software Systems, LLC uses modern software engineering techniques to provide simulation services.
http://www.highpointsoftware.com
Definitions, low cost discrete and continuous software tools, manufacturing and queing models. PASION simulation system - free demo, links and examples of applications.
http://storm.prohosting.com/stanracz/simulation.htm
Uncertainty management in dynamic system modeling and simulation using differential inclusions. It is shown that the differential inclusion is the proper mathematical tool for uncertainty. A differential inclusion solver is presented.
http://www.raczynski.com/pn/uncertainty.htm