Kill Bill
Open-source subscription billing and payments platform with real-time analytics, modular design, and self-hosting to avoid vendor lock-in.
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Open-source billing platform you self-host to avoid lock-in, with modular design and real-time analytics.
Core Features
- Flexible subscription billing models for testing
- Built-in trial and discount capabilities
- Modular: disable or replace components
- On-premises or cloud deployment, scales automatically
- Real-time analytics and financial reports
What It Can't Do
- •Open-source core is free, but commercial support (SLA, training) requires payment. Project relies on community sponsors. Initial setup has technical learning curve.
Use Cases
- SaaS companies needing customizable billing
- E-commerce platforms wanting self-hosted payments
- Startups avoiding vendor lock-in
- Large enterprises requiring scalable billing infra
Detailed Introduction
Kill Bill is a leading open-source subscription billing and payments platform that has been battle-tested over 10 years. It helps businesses scale billing and payment infrastructure with real-time analytics and financial reports. Unlike all-in-one SaaS solutions, Kill Bill is highly modular, allowing you to enable only needed features or replace components with existing systems. It supports on-premises or cloud deployment, scales with growth, and provides a framework for extensibility. You avoid vendor lock-in and control your business data. Get started with a one-click AWS deployer or a free hosted sandbox at cloud.killbill.io.
Troubleshooting & FAQ (2)
TroubleshootingHow to fix Jetty 'Error while closing the output stream' when accessing a non-existent plugin endpoint in Kill Bill?
This error occurs because when a plugin is missing, the OSGI servlet bridge calls sendError(404) which commits the servlet response before Jersey can write its own. The fix is available in Kill Bill via PR #2217. Update to a version that includes this fix, or apply the patch manually.
TroubleshootingHow to fix deprecated SecurityManager warning in Kill Bill after upgrading to Java 17 or above?
The deprecated SecurityManager usage in ThreadNameBasedDiscriminator was replaced with StackWalker via PR #2220. Upgrade to a Kill Bill version that includes this fix to eliminate the warning and ensure compatibility with future JDK releases (e.g., Java 23+).
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Getting Started
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Install the software
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Choose deployment: one-click AWS deployer or local Docker/Java setup
Configure database (MySQL/PostgreSQL) and run init scripts
Start Kill Bill service, manage subscriptions & payments via REST API or UI
- Choose deployment: one-click AWS deployer or local Docker/Java setup
- Configure database (MySQL/PostgreSQL) and run init scripts
- Start Kill Bill service, manage subscriptions & payments via REST API or UI
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Stop services, delete database schema and installation files to fully remove.
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