Crow.app - Pricing and experimentation tools for Stripe
Shippn - Shop from 25+ countries that don't ship to your country.
Mailgun - A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.
Ship.com - Package shipping & tracking app for mobile.
Stripe for Gmail - Display customers Stripe information within inbound emails
Uber - Uber is a website and mobile app that allows you to get a ride similar to a taxi service from your phone.