AffiliateWP - A powerful affiliate marketing solution for WordPress.

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

Echo - Golang HTTP server framework

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

Rakuten Marketing Affiliate - Rakuten Marketing Affiliate is a comprehensive affiliate network that helps marketers get to engage consumers through their customer journey.

Zuora - Zuora creates cloud-based software on a subscription basis that enables any company in any industry to successfully launch, manage, and transform into a subscription business.