HandUp Gift Cards - Give directly to a homeless neighbor on the street

Google Payment API - Enable an easy-to-use checkout experience for customers

Watsi Gift Cards - Give the gift of health to those in need

Giftbit Payment API - Stripe for gift cards

The Groundwork - The API for building modern movements

Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.