dnsmasq - Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server.
RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
BIND - BIND is by far the most widely used DNS software on the Internet.
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
PowerDNS - PowerDNS offers open source DNS software, services, and support.
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything