Actran - Actran is a finite element-based simulation software to analyze the acoustic behavior of mechanical systems and parts.
GNS3 - GNS3 is a graphical network simulator that allows simulation of complex networks.
EcosimPro - EcosimPro is a continuous and discrete modelling and simulation software.
ns-3 - a discrete-event network simulator for internet systems
E-Hub - Simulation Modeling
NetSim - NetSim software was created to simulate various Cisco systems. Cisco software is known around the world as being one of the best network, routing and switch systems for businesses and private use. Read more about NetSim.