Kill Bill
Apache-2.0 in-house subscriptions and payments, no % take-rate
Payments / Billing · Apache-2.0 · 5.7k
What's Good
Apache-2.0. Subscriptions, invoicing, payments, and plugins you host. Self-Hosted OSS is Free — no percentage take-rate. JVM stack, Kaui admin UI, plugin model. You keep the money-movement relationship.
The Catch
JVM and ops-heavy. Aviate is the proprietary accelerator — not the Apache tree. Self-Hosted OSS Free; AWS Marketplace is ~$40/mo plus the AWS bill. No revenue tiles here because there is no % of revenue to quote.
Verdict
Apache-2.0 billing you run. Free until Aviate or the AMI; never a take-rate.
Embed
[](https://stackgems.com/gems/killbill)