1FORhunger - Buy a meal, give a meal, get a picture of the donated meal
Stripe Billing - A set of tools for billing and subscriptions
Gift Card Bank - Give a gift card to someone in need due to Coronavirus
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!
Giftbit Payment API - Stripe for gift cards
Square Installments - An easy way to offer monthly payment plans to your customers