You can purchase gluten free food software, but when I bought it many of the brands that I use were not even on it. In my opinion it was a big waste of money. I think the best way to shop is to buy products from companies that will not hide gluten in other ingredients such as spices, flavorings, and natural flavorings. When you look in the ingredient list from one of those companies if there is gluten in the product they will disclose it. For example, Nestle Butterscotch chips ingredient disclosure looks like this: natural flavors (barley). There are many companies like this including Kraft, General Mills, and Nestle. I will post a link to a more complete list. Other companies have gluten free lists online such as Ore-Ida/Heinz, Newman's Own, and Frito-Lay. What I do is if the company does not list their gluten, I go to their website and look under the FAQ or ingredient section and if I find nothing there, then I call them. It gets easier once you figure out the brands to buy.
I recommend that you call all of the major companies, because this list may not be perfect.
http://www.glutenfreeindy.com/foodlists/in...donothidegluten