Killbill - Open-Source Subscription Billing and Payment Platform
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
Subscription Billing - Sales Order Processing that automates and manages cyclical and subscription based billings by generating invoices, quotes or orders in Dynamics GP.
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.
Tossy - Create subscription based memberships & donations for India
Payoneer - Whether making international payments, receiving funds, managing your digital business, or accessing capital, Payoneer opens your business up to the world.