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

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

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

Sizmek - Sizmek is an open ad management for end-to-end advertising.

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.

AdHawk - AdHawk aggregates a company's total digital marketing data, and offers advertisers one-click optimization solutions.