Cisco Packet Tracer - Download Cisco Packet Tracer, an innovative network simulation and visualization tool used by Cisco Networking Academy students and instructors.
AQUASIM - In order to support environmental scientists in finding an «adequate» model of the system...
GNS3 - GNS3 is a graphical network simulator that allows simulation of complex networks.
STOAT - STOAT - a dynamic sewage treatment works modelling package
Paessler Multi Server Simulator - Paessler Multi Server Simulator is inexpensive and robust software that helps you power massive-scale testing.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming