Caroline, I think all of them have a download coupon tool. Atleast the ones I've used. I often google a brand or a specific product...find a coupon and print. :o) But like I said I can't recall not ever having a download tool.
Sometimes the browser you use isn't compatable with the tools ability to down load. I use Opera for most of my browsing, but a few sites I have to make sure I open in IE or no go. :o)