I thought it may be helpful to start a KNOWN list of motion options that can/have been used with Mach3. Might be nice to start a sticky list of all the options.
Mach3 - LPT - Mach3
Smooth stepper (SS) Usb - Plugin
NCPOD -usb - plugin
G-rex - USB - plugin
Mesa - usb- Smurf plugin
Mesa - LPT - Art plugin
Galil -

- SMurf & Ken? plugin
Kflop- USB - Kflop PLugin
DSPMC- Ethernet- Plugin DspMC
Deva - PCI
Jamen - USB
Ajax - Pci- Fiber Optic - Ajax plugin
Cenipede PCI
Any others that you know of, (;-) TP