Chargebee - Chargebee lets you manage subscriptions and payments at scale, handle custom recurring billing scenarios, reduce subscription churn and simplify accounting.
Frederick - Frederick is a marketing automation platform for local services.
Trexle - Payment Platform Supporting One-time and Recurring Billing
BookSteam - BookSteam Online booking and appointment scheduling software for businesses worldwide. Easy to use, cloud based web scheduler that includes class and group bookings. Calendar management and schedule organization, trusted by thousands.
Killbill - Open-Source Subscription Billing and Payment Platform
RetentionForce - Accelerate growth with a full suite of solutions for a loyalty program, referrals, online reviews, customer feedback, SMS marketing, marketing automation, chatbots, and more.