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

Workplace by Facebook - Connect everyone in your company and turn ideas into action.

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

Unily - Unily is a cloud-based intranet solution designed by SharePoint consultancy BrightStarr.

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.

Communifire - Enterprise Social Collaboration Software