Galils work with up to six axis as far as I know, it all depends on the model you have.
Other options for analogue drives are DSPMC and KFlop with the Kanalog card.
But as has already been said if your drives accept Step/Dir input, sometimes called pulse/dir or pulse/sign then you can use the parallel port or SmoothStepper or Kflop. If your drives can accept CW/CCW signals then I think you can also use the SmoothStepper.
Hood