This one isn't software. It's in a book form. I have this one at home. It's Teach Yourself Visually Knitting Design: Working from a Master Pattern to Fashion Your own knits by Sharon Turner. You can use any size needles, any yarn, and these are multiple sizes from children's through adult. They teach you how to do basic garments and customize them with little touches. This is not only for sweaters, but hats, mittens, gloves, etc. They have master patterns and you insert your numbers from the charts. You can click to look inside the book here at Amazon.