OpenSIMPLY
    
            
                
                    Discrete-event simulation modeling software for science and education
                
            
             
            
             
            
        
            OpenSIMPLY is an open source project for simulation modeling  in Delphi, Lazarus,  Free Pascal.
Download OpenSIMPLY at opensimply.org
The project is free computer simulation software  based on discrete-event approach.
OpenSIMPLY is a science software with very high simulation performance. 
So, the simulation results can be obtained much faster.
The project is suitable for people with any modeling experience, and can be used for both science and education.
Some application of this modeling software are: 
 - traffic simulation 
 - network simulation,
 - emergency and evacuation ways simulation
and much more.
This simulation tool runs in Windows and Linux, on 32-bit and 64-bit platforms, as a GUI or console (terminal) application. 
Write the model only once, simulate anywhere.
Videos on installing OpenSIMPLY for different IDEs and operating systems : https://www.youtube.com/playlist?list=PLnyWoktGqA