Wirize - Payment checkout for freelancers
1FORhunger - Buy a meal, give a meal, get a picture of the donated meal
ACH payments with Stripe - Accept bank payments with a few lines of code.
Gift Card Bank - Give a gift card to someone in need due to Coronavirus
Giftbit Payment API - Stripe for gift cards
Recurring Payments - No need to create invoices. No need to remind clients to pay