Muni-Link - Cloud-based utility billing software
Stripe Billing - A set of tools for billing and subscriptions
Trexle - Payment Platform Supporting One-time and Recurring Billing
PayHere - Run a services business or startup? Charge recurring and one-off payments with beautifully designed payment forms. Get up and running in less than 5 minutes!
ShipForce - | Flat Rate Fulfillment
Square Installments - An easy way to offer monthly payment plans to your customers