Foursquare City Guide - Foursquare City Guide is a Free to use mobile application that will lead you to the perfect spot anytime anywhere around the world.
Stripe Billing - A set of tools for billing and subscriptions
Sygic Travel Maps - Itinerary planner for independent travelers
PayHere - Run a services business or startup? Charge recurring and one-off payments with beautifully designed payment forms. Get up and running in less than 5 minutes!
Flamyngo - Create a city guide with help of your friends.
Square Installments - An easy way to offer monthly payment plans to your customers