Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Stripe Billing - A set of tools for billing and subscriptions
Bigtent - BigTent is a web-based organization and communication portal for groups.
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!
Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.
Square Installments - An easy way to offer monthly payment plans to your customers