Alto Quilt Cut:
http://www.quiltcut.com/
Accquilt:
http://www.accuquilt.com/
Many people get the two confused with each other.
I have both and use the Accucut Go more. I noticed on the new Alto the ruler is very hard to slide. It sticks horribly. Mine is older and the groove seems to be a little wider so the ruler moves smoothly. I wonder why they changed?