Google Pay - Make secure payments right through your Android device.
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.
AirPay - Integrate all payment channels via one single API
Shopify Pay - Give shoppers a fast, secure way to pay
ePayments - ePayments is a convenient digital wallet that is specially made for those people who want to make money on the internet.
Stripe iOS SDK - Accept both Apple Pay and credit card payments easily on iOS