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.
Mygate is a financial services and payment solutions company that provides safe and secure transactions for online merchants across Europe and in South Africa. The payment gateway allows merchants to accept credit card payments from their websites, automate recurring payments, process manual payments for mail order and telephone orders, take fraud prevention measures and receive reports via a transaction reporting system. The Mygate API makes this functionality available to be integrated with other websites and applications.