The Stripe Haskell Library by David Johnson is written in Haskell. It offers developers Stripe's API features such as transactions, subscriptions, plans, coupons, discounts, invoices as well as others.
Google has released a Google Card Linked Offers API that allows merchants to drive customer loyalty by providing targeted offers to customers who save their loyalty card to Android Pay. Card Linked Offers are displayed to customers within the loyalty card view of Save to Android Pay.
Currencycloud is a cloud payments platform that allows businesses to automate and send international bank transfers. In this tutorial, you will learn how to use the Currencycloud APIs so you can begin to make international payments from within your organization's business applications.