I just found this via one of the blogs I stalk and I love the potential of this quilt design website. I have a PC and a Mac and own EQ (Electric Quilt) program. I love it but don't have the Windows software so it will work on my Mac. This website seems to solve that issue.
http://intrepidthread.blogspot.com/ This is the blog from which I found Quiltivate. Forgive my infantile attempts at blogging. I promise I'll get better.