is by Plannix, Deck building. You can find this at any software retail outlet.
Also, www.DecksUSA.com has some good software. You buy this on line.
However, if you want to save $50, send me all the details about your deck, any and all amenities you want on it, and I will compile a material list for you. I need all the details even on beam size, joist size, joist spacing, decking size and all.