MotorSim is a fully object oriented windows program that simulates a motor controller. You can select from a number of control algorithms and apply various loads to the motor to monitor the performance as you change speed. Mutiple motors can be run simultaneously. Control algoritms are proportional (P), proportional-integral (PI) and proportional-integral-differential (PID). You can also load and save different simulations. You can even have multiple motors running simultaneously.
Please note that MotorSim will not run on Win64 systems.