What are some alternatives?
When comparing Electronic Payment Systems and Aria Systems, you can also consider the following products
BLACKHAWK NETWORK - BLACKHAWK NETWORK is a branded payment software that allows you to increase your revenue.
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.
iTransact - iTransact is a best in class investment platform that makes the processes simple, efficient, and low cost.
Chargebee - Chargebee lets you manage subscriptions and payments at scale, handle custom recurring billing scenarios, reduce subscription churn and simplify accounting.