RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
SuperNormal - Async video updates for remote teams
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
Threadit by Google - Short video recordings for async collaboration
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
Breve - Breve helps you to record and send frequent video updates to your team.