Adobe Illustrator users --- check out ImagePaint

If I were willing to use Adobe Illustrator (or had a spare CS6 license for Windows), Iā€™d probably be hard-pressed to decide between this and Vectric Vcarve if I were inclined to purchase a commercial tool:

The company publishes patterns (some free samples, other paid ā€” not sure of the format) so may be worth checking out on that basis.