logic simulator

CertExams.com simulator provides network simulator for Juniper (TM) routers.

GMAT Exam Simulator - Complete with all three sections

GRE Test Simulator - Complete with all three sections

Patent Bar Simulator - USPTO Registration Examination Preparation

OPC Simulator Server

Microchip PIC microcontroller simulator

A Turing Machine Simulator that allows an arbitrary machine to be loaded

M/M/1 Solver & Simulator solves and simulates the M/M/1 queuing system.

Pretty cool 3D lower level AI simulator. There is a food chain

Ensure success in SCEA with Whizlabs' Simulator