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

SmartFocus - SmartFocus empowers you to deliver omnichannel​ marketing campaigns with true personalization.

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

AdCurve - AdCurve is an online campaign management platform for retailers.

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.

Powermailer - Bulk Email Marketing Service in India by PowerMailer helps you to design email newsletters, Schedule your Email Campaigns, Track Email Campaigns