Metering.ai - Bridge the gap between product usage and Stripe billing with just 3 clicks. Meter your product’s usage and send it to Stripe without manual effort. No more billing errors or disputes due to complicated Excel calculations.

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

Lotus - Canvas for drawing in real-time with others around the world

Chargify - Chargify is the best online billing software for all of your Recurring Billing needs. Learn more about simplifying your Subscription Billing today.

Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.

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