Now there's an alternative to Seventh Generation. Nature Babycare Diapers are also chlorine-free, and made of 100% biodegradable material. The company even plants a tree with every pack that you purchase.
So if you wanted to be green, but you just couldn't venture the cloth diaper route, these might be worth checking out. They got a thumbs up from Cool Mom Picks. You can read her full review here.