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.
Subscription Payments by involve.me - Launch a subscription business in one day
Rocket Money - Find your paid subscriptions and cancel with one click
Chargebee - Chargebee lets you manage subscriptions and payments at scale, handle custom recurring billing scenarios, reduce subscription churn and simplify accounting.
Quiken - All-in-one client and request management platform.
HonorCare - HonorCare is a web portal that makes it easy for you to make online medical payments in an accessible and authentic way.