Uber Cloud - UberCloud is the cloud for engineers that provides cloud simulation solutions for engineers and scientists.
FlexSim - Simulation software to model, simulate, predict, and visualize systems in manufacturing, material handling, healthcare, warehousing, mining, etc.
SprutCAM - SprutCAM all-in-one software for CNC machines programming
ns-3 - a discrete-event network simulator for internet systems
SIMUL8 - Simulation is an effective system that permits you to make striking, certain choices since it gives you the confirmation to make certain you are settling on the right decision.
Paessler Multi Server Simulator - Paessler Multi Server Simulator is inexpensive and robust software that helps you power massive-scale testing.