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killbillOpen-Source Subscription Billing & Payments Platform

Open-Source Subscription Billing & Payments Platform

5,350 stars
897 forks
Java
Apache-2.0
killbill screenshot

killbill

Kill Bill is an open-source subscription billing and payments platform designed to help businesses scale their billing infrastructure without vendor lock-in. With over a decade of proven reliability, it powers billing operations for SaaS and e-commerce organizations of all sizes.

Key Features

  • Flexible Subscription Models: Test various billing strategies, manage trials, and apply promotional discounts easily
  • Real-time Analytics: Access comprehensive financial reports and analytics out of the box
  • Modular Architecture: Disable unnecessary features or integrate with existing systems seamlessly
  • Scalability: Runs on-premises or in the cloud, growing with your business needs
  • Extensibility Framework: Highly customizable platform for specialized billing requirements

Use Cases

  • SaaS Platforms: Manage recurring subscriptions, usage-based billing, and customer lifecycle
  • E-commerce: Handle complex payment processing and promotional billing strategies
  • Multi-business Deployments: Deploy incrementally across different business areas

Who Is It For

Kill Bill is ideal for online businesses—from startups to enterprises—that need complete control over their billing operations. It's perfect for companies seeking the functionality of SaaS billing solutions with the flexibility, cost-effectiveness, and data ownership of an open-source platform.