Chargebee - Chargebee lets you manage subscriptions and payments at scale, handle custom recurring billing scenarios, reduce subscription churn and simplify accounting.

Receiptful - Receipts that increase CLTV. Exclusive (early access to PH)

Chargify - Chargify is the best online billing software for all of your Recurring Billing needs. Learn more about simplifying your Subscription Billing today.

Keep Your Friends Close - A free e-book about maximizing Customer Lifetime Value

Recurly - Subscription billing and recurring billing management. Recurly offers enterprise-class subscription billing for thousands of companies worldwide.

Productfy - The most advanced platform for building fintech applications