I have quilt wizard, which is EQ's inexpensive "starter" program. It was around $29 at Joann's. It is very limited, however, in what it can do.
I also have Block Base, also by EQ. It has tons of blocks, and you can print rotary and paper-piece patterns, but it won't design a quilt for you. However, with EQ, you can import these blocks.
I also use a CAD program (I'm an unemployed drafter) to help me design quilts. I think there may even be a free downloadable CAD program out there, but seriously, Electric Quilt would probably be easier to use.