FlexSim
AnyLogic
ns-3
Paessler Multi Server Simulator
IMUNES
NetSim
Cisco VIRL
Mininet
TransModeler
MATSim
AnyLogic
Simulation of Urban MObility (SUMO)
TSIS-CORSIM
TRANSIMS
PTV Visum
The Repast Suite
FlexSim
TransModelerAnyLogic - AnyLogic has changed simulation modeling and expanded its application into complex business environments. The unmatched flexibility of multimethod modeling allows users to capture the complexity of virtually any system, at any level of detail.
MATSim - MATSim is an open-source framework for implementing large-scale agent-based transport simulations.
ns-3 - a discrete-event network simulator for internet systems
Paessler Multi Server Simulator - Paessler Multi Server Simulator is inexpensive and robust software that helps you power massive-scale testing.
Simulation of Urban MObility (SUMO) - "Simulation of Urban MObility" (SUMO) is an open source, highly portable, microscopic and continuous road traffic simulation package designed to handle large road networks. SUMO is licensed under the Eclipse Public License V2.
IMUNES - IMUNES is a cost-effective and efficient Integrated Multiprotocol Network Simulator/Emulator that functions as a tool for Linux and FreeBSD.