Mining 4 Charity - Turn hashpower into good deeds
Google Payment API - Enable an easy-to-use checkout experience for customers
ESO EHR - Emergency Medical Services
Giftbit Payment API - Stripe for gift cards
microChange - Snapchat-Venmo hybrid for donating.
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.