Groupon - Each day Groupon offers a deal through local vendors in your city.
Square - Square helps millions of sellers run their business-from secure credit card processing to point of sale solutions. Get paid faster with Square. Sign up today!
idealo - Idealo is a free to use mobile application that helps you to find products, compare price and make an informed decision.
Lightspeed - retail and restaurant point-of-sale, ecommerce, and omnichannel solution
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
QuickBooksPOS - QuickBooksPOS offer POS system software for small businesses.