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Kill Bill

Kill Bill has been the leading open-source platform for billing and payment since 2010.

Welcome to Kill Bill!

The Kill Bill billing system and payments platform is feature-rich out-of-the-box and highly customizable. Use it for highly complex billing schemes, including one-offs, recurring, and usage-based plans.

Kill Bill is not an all-in-one solution. Instead, it's highly modularized; you can disable the functionality you don't need or replace functionality with one of your existing systems. The real power of Kill Bill lies in building your own business logic on top of it to create a customized billing and payments solution.

You can write plugins to modify Kill Bill's behavior and integrate with third-party vendors. Kill Bill already has many open-source plugins. Use them as examples for creating your own or modify them for your own use.

Your business doesn't need to rely on the uptime or processing speed of a SaaS provider. You choose where to run Kill Bill from, on-premise or in the cloud, like Kill Bill on AWS.

For more information:

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  1. killbill killbill Public

    Open-Source Subscription Billing & Payments Platform

    Java 5.4k 904

  2. killbill-admin-ui killbill-admin-ui Public

    Kill Bill Administrative UI engine

    HTML 63 72

  3. killbill-docs killbill-docs Public

    Kill Bill documentation

    CSS 42 88

  4. killbill-client-java killbill-client-java Public

    Java client library for Kill Bill

    Java 34 68

  5. killbill-client-ruby killbill-client-ruby Public

    Ruby client library for Kill Bill

    Ruby 25 26

  6. killbill-cloud killbill-cloud Public

    Kill Bill deployment utilities

    Ruby 67 96

Repositories

Showing 10 of 113 repositories
  • killbill-plugin-api Public

    Kill Bill plugin APIs

    killbill/killbill-plugin-api’s past year of commit activity
    Java 9 Apache-2.0 23 0 0 Updated Apr 2, 2026
  • killbill-oss-parent Public

    Kill Bill parent pom.xml

    killbill/killbill-oss-parent’s past year of commit activity
    Shell 4 Apache-2.0 65 10 28 Updated Apr 2, 2026
  • killbill Public

    Open-Source Subscription Billing & Payments Platform

    killbill/killbill’s past year of commit activity
    Java 5,399 Apache-2.0 904 223 12 Updated Apr 2, 2026
  • killbill-platform Public

    Kill Bill core platform

    killbill/killbill-platform’s past year of commit activity
    Java 30 Apache-2.0 42 9 1 Updated Apr 2, 2026
  • killbill-client-java Public

    Java client library for Kill Bill

    killbill/killbill-client-java’s past year of commit activity
    Java 34 Apache-2.0 68 12 1 Updated Apr 2, 2026
  • killbill-api Public

    Kill Bill APIs

    killbill/killbill-api’s past year of commit activity
    Java 18 Apache-2.0 36 2 0 Updated Apr 2, 2026
  • killbill-plugin-framework-java Public

    Framework to write Kill Bill plugins

    killbill/killbill-plugin-framework-java’s past year of commit activity
    Java 8 Apache-2.0 23 9 0 Updated Apr 2, 2026
  • killbill-commons Public

    Kill Bill reusable Java components

    killbill/killbill-commons’s past year of commit activity
    Java 143 Apache-2.0 64 15 3 Updated Apr 2, 2026
  • killbill-avatax-plugin Public

    Kill Bill plugin for Avalara AvaTax

    killbill/killbill-avatax-plugin’s past year of commit activity
    Java 6 Apache-2.0 14 2 2 Updated Apr 2, 2026
  • killbill-docs Public

    Kill Bill documentation

    killbill/killbill-docs’s past year of commit activity
    CSS 42 Apache-2.0 88 18 3 Updated Apr 2, 2026

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