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Kill Bill

Open-source subscription billing platform

Budgeting & Finance ★ 5.7k stars Hard setup Apache-2.0

Kill Bill is a mature, open-source subscription billing and payments platform. It handles recurring billing, invoicing, payment routing, and analytics for businesses with complex billing needs.

Key features

  • Recurring subscription billing
  • Pluggable payment gateways
  • Invoicing and tax handling
  • Analytics plugin

Pros & cons

Strengths

  • Battle-tested at scale
  • Highly extensible plugins

Trade-offs

  • Java stack is heavy
  • Operationally complex

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