Chargebee - Chargebee lets you manage subscriptions and payments at scale, handle custom recurring billing scenarios, reduce subscription churn and simplify accounting.
NewsWhip - Chrome extension that checks how viral your content is
Chargify - Chargify is the best online billing software for all of your Recurring Billing needs. Learn more about simplifying your Subscription Billing today.
Promo Self Serve - Launch a promotion across the internet in 90 Seconds
Recurly - Subscription billing and recurring billing management. Recurly offers enterprise-class subscription billing for thousands of companies worldwide.
SocialRank - Graph search for TWTR. Filter by interests, location, etc