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Upromise - Upromise is the cashback coupon and rebate site.
Groupon - Each day Groupon offers a deal through local vendors in your city.
Stocard - All loyalty cards on your smartphone!
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
KOHO - KOHO is a place where you can access your money in real-time and get instant cashback.