http://code.google.com/p/miniemc2/
http://miniemc2.blogspot.com/

http://www.xylotex.com/3axBoard.htm
http://www.shapeoko.com/wiki/index.php/Xylotex_3-Axis_Stepper_Motor_Driver_Board

http://www.cooking-hacks.com/index.php/l6470-stepper-driver-breakout.html

This package is also used in GNU/Linux on Raspberry Pi
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?RaspbianXenomaiBuild

[rpi-lcnc.img] or http://filecloud.io/_0vew6zmj