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.

SecuraCart - The easiest way to accept one-time and recurring payments.

SuperPay - Get paid faster with your own custom payments page

Atom Pay - Atom is the easiest way to get paid for what you do.

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

Payzo - Accept credit cards with zero coding (for freelancers)