GiftBuster - Wish list registry & shopping list app
Coupofy - Coupofy is USAs number 1 trustworthy deals and coupons website.
Mystery Gift Bot - Don't think about what to buy, let it be a mystery
LoveSales - Find and save products you love, get alerted when they go on sale.
Gift Hero - The best wish list ever
Lootr.com - Lootr - Your favorite amazon price tracker. Saving you from paying full price.