AngelList Stack - AngelList Stack lets you effortlessly create a fundraising-ready startup.
RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
ESOP - Tokenized Employee Stock Option Plans on Ethereum
Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything
PayPal Generosity Network - Create fundraising campaigns with PayPal
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.