Autumn is an open-source tool that simplifies the integration of Stripe for various pricing models, including subscriptions and usage-based billing, with minimal coding. It offers both cloud and self-hosted options, and provides essential functions for managing billing logic and customer access. Users can easily set up their environment and manage complex billing scenarios without dealing with backend complications.

Airwallex has acquired billing platform OpenPay to enhance its services and compete directly with Stripe Billing. OpenPay offers features such as subscription management and payment orchestration, which Airwallex aims to leverage to create a global billing platform designed for modern multi-currency needs.