RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
ebates - Find thousands of coupons, promo codes and discounts.
Dealspotr - Dealspotr is like Wikipedia for deals.
link-o-mat - Cashback Portal - Verdiene mit linkomat Cashback - weltweit über 9500 Shops
Discount Reactor - Find the best selected coupon codes, hot deals, fresh promotions and great special offers from more than 2634 stores at DiscountReactor
Shoop - Interactive ticketing and social networking platform. Book social encounters, not just tickets.