Software Products of Interest

Call Center Software by Ger Koole and others
Java Powered Queueing
QNA by Ward Whitt
QNET
QNPET
QNAP-2 (apparently more simulation than analytic)
RQA-1: Recursive Queue Analyzer, Wallace and Rosenberg, 1966
QtsPlus
M-Erlang
QPACK by Mohan Choudhry
Hills-B
MITAN by Mike Tanner
IEX some comments by IEX executives
QNAT (needs Mathematica)
RAQS Rapid Analysis of Queueing Systems
Portage call-center stuff
nppmle and nppsim - software for estimating and simulating non-homogeneous Poisson processes having cyclic behavior.
Excel Add-ins, see especially "probability models"
Queueing ToolPak for Excel (free!)
Incoming Calls Management Institute
Call Center Calculator
MGMtool for matrix-geometric stuff, in C.
MAMsolver
Mark S. Squillante. MAGIC: A computer performance modeling tool based on matrix-geometric techniques. in Proc. Fifth International Conference on Modelling Techniques and Tools for Computer Performance Evaluation, 1991

Also see Myron Hlynka's Queueing Theory Page
Also, see Betsy Greenberg's syllabus for more references to software.