PayPal - PayPal is the faster, safer way to pay online without sharing financial details, send and receive money or accept credit and debit cards as a seller
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.
Shopify Pay - Give shoppers a fast, secure way to pay
Payoneer - Whether making international payments, receiving funds, managing your digital business, or accessing capital, Payoneer opens your business up to the world.
Stripe iOS SDK - Accept both Apple Pay and credit card payments easily on iOS
Skrill - Skrill (formerly known as Moneybookers) is the cheaper way to send and receive money worldwide.