For a service that aggregates verified coupon codes for a broad swath of online retailers, including specialty stores, SimplyCodes is a solid choice. It offers validated coupon codes for more than 400,000 online stores, with an average redemption rate three times higher than other services. The service also offers a browser extension and mobile app that alert you to deals and offer tips on how to save money, making it a good option for heavy shoppers. And you can earn tokens by contributing to the service and enter "Grab Bags" for a chance to win more money.
Another good option is Karma, which simplifies online shopping by automatically applying promo codes and cashback rewards at checkout. With support for more than 100,000 stores and an average savings of 18% per order, Karma is a good all-purpose option for saving money. It also offers price tracking and alerts, product comparison and wish list management, so it can be a useful tool for online shoppers.