Chargebee

Chargebee is a recurring billing and subscription management platform built by the company of the same name, focused on SaaS and other subscription businesses. It's made for founders and finance teams who sell software as a monthly or yearly subscription and want full control over the billing cycle without coding it themselves.

The idea is simple: you set up your plans and prices in a product catalog, connect a payment gateway, and Chargebee then runs the entire subscription lifecycle. It automatically issues invoices when a customer signs up, renews or changes a plan, tracks trial periods, handles upgrades and downgrades, and calculates taxes like VAT according to each country's rules.