GetBadges - GetBadges is a gamification platform which allows developers to play and compete while using software development tools.

RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.

HabitScript - Gamify your coding time

Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything

Goals & Challenges by Fini - A social way to gamify goals and habits with challenges

Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.