CostMin 

CostMin is exactly as it sounds - it will reduce your costs to the minimum. Just install the CostMin add-on on your browsers, surf the web and get special offers when you need them the most. Once installed, the add-on will detect online-shopping websites and will offer you with special coupons, discounts and sales for the items you searched for in those websites. The offers will pop at the top right corner of your browser and will help you save money and time.