What are some alternatives?
When comparing Piggy and Waldo, you can also consider the following products
Honey.is - Honey is a beautiful and intuitive social intranet for your company. Built to connect global teams, share resources, simplify team conversations, and support employee workflows.
Wikibuy - Find lower prices at other sellers while you shop on Amazon
Coupons At Checkout - Coupons at Checkout is a browser plugin for Chrome, Firefox, Internet Explorer, and Safari that...
Cently - Automatic coupons + cashback for you and your friends
Shopper.com - Uber for Coupon Codes
Dealhack - Dealhack: You Focus on Shopping, and We Focus on Your Savings