RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
Shopkick - Earn free gift cards while shopping at your favorite stores. Find deals at Target, Walmart, Best Buy, Walgreens, Marshalls, TJ Maxx, eBay, Groupon, and more with Shopkick.
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
ibotta - Earn cashback by shopping at your favorite stores
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
Dosh - Cash back, auto-magically