RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
Olivia - Your new best friend built with an artificial neural network
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
Digit - SMS bot that monitors your bank account & saves you money
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
Spendee - See where your money goes