No-IP - Dynamic DNS and Managed DNS Provider
RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
FreeDNS by Afraid.org - Free DNS hosting, lets you fully manage your own domain. Dynamic DNS and Static DNS services available. You may also create hosts off other domains that we host upon the domain owners consent, we have several domains to choose from!
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
Duck DNS - Free dynamic DNS hosted on Amazon VPC
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.