Queuing Analysis Simulator

(11/13/2013) I found these two online queuing analysis simulators when I was preparing for my class.  This first one is provided by supositorio.com. It provides only queuing systems with Poisson arrival rate and Exponential distributed service time. (that is M/M/.... system). You can imbed its link of this calculator Queueing Theory Calculator on your webpage:

The second simulator, which is provided by Dr. Jaroslav Sklenar, is more powerful and flexible. It allows you to set different distribution patterns in the arrival rate and service time of the queuing system. You can also configure batch arrival/service or configure an open/closed queuing system. However, you have to really understand the details of your queuing systems and know how to write simple coding for it.