Show HN: Portcall – open-source billing engine for modern SaaS

Billing should be simple, composable, and flexible. But most tools are either too limited or too heavy. We wanted something in the middle, and made it open source.

Portcall gives your SaaS:

- Self-serve PLG checkout (payment provider agnostic)

- Entitlements as a first-class concept

- Usage metering built into the model

- Automated invoicing

- A unified product/pricing system that evolves with you as you grow

- And a lot more to come

Curious where billing has bitten you and what you'd want from a modern OSS billing engine.

Repo: https://github.com/useportcall/portcall Demo: https://youtu.be/ZJ2sI-VnNiA?si=bVn4xskIcSLKg6hE