RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
Wren - Offset your carbon footprint by saving rainforests
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
YAYZY - Track the carbon footprint of each purchase in real-time
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
Klima - Go carbon neutral