1FORhunger - Buy a meal, give a meal, get a picture of the donated meal
Wirize - Payment checkout for freelancers
Gift Card Bank - Give a gift card to someone in need due to Coronavirus
Giftcard Zen - Buy a gift card at a discount
Patreon - Patreon enables fans to give ongoing support to their favorite creators.
Google Payment API - Enable an easy-to-use checkout experience for customers