Autumn is an open-source pricing & billing platform.

The most simple and flexible way to setup payments

Open-source infra above Stripe that manages permissions, usage limits and payment flows. Setup your pricing plans in minutes and never touch billing again.

• Autumn @ GitHub.

Monetize AI Apps in Minutes. You set the markup, we handle the rest.

Echo is a billing in a box solution for all AI APIs Replace your OpenAI import with Echo. Get instant OAuth, user accounts, and usage billing.

• Echo @ GitHub.

Open-source billing and payment platform.

Streamline Billing, Manage Subscriptions & Collect Payments Kill Bill has automated the world's most complex billing problems. And it’s open-source, so it’s yours.

Kill Bill has been the leading Open-Source Subscription Billing & Payments Platform over the past 10 years. The platform exists to help you scale your billing and payment infrastructure and to grow your business. Out of the box, you have access to real-time analytics and financial reports. And because you are in control of your business and client data, you avoid any vendor lock-in.

• Kill Bill @ GitHub.

RestoPOS is a cloud-based SaaS solution designed for restaurants, cafés, and food businesses to streamline billing, order management, inventory tracking, and more. Built with Laravel and Vue.js, it supports multi-tenancy, allowing multiple restaurants to operate independently on a single platform.

The FinOps Open Cost and Usage Specification (FOCUS™) is an open-source specification that defines clear requirements for billing data generators to produce consistent cost and usage datasets.

Related contents:

• Simplify multi-cloud cost management with FOCUS and Datadog @ Datadog.