Groupon - Each day Groupon offers a deal through local vendors in your city.
Coupofy - Coupofy is USAs number 1 trustworthy deals and coupons website.
idealo - Idealo is a free to use mobile application that helps you to find products, compare price and make an informed decision.
Mobile Bandit - Don't Buy Deals get Mobile Bandit.
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
LoveSales - Find and save products you love, get alerted when they go on sale.