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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 5k 838

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

    Kill Bill Administrative UI engine

    Ruby 57 64

  3. killbill-docs killbill-docs Public

    Kill Bill documentation

    CSS 39 82

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

    Java client library for Kill Bill

    Java 33 64

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

    Ruby client library for Kill Bill

    Ruby 24 25

  6. killbill-cloud killbill-cloud Public

    Kill Bill deployment utilities

    Ruby 65 89

Repositories

Showing 10 of 113 repositories
  • killbill-cloud Public

    Kill Bill deployment utilities

    killbill/killbill-cloud’s past year of commit activity
    Ruby 65 Apache-2.0 89 26 5 Updated Aug 3, 2025
  • killbill-docs Public

    Kill Bill documentation

    killbill/killbill-docs’s past year of commit activity
    CSS 39 Apache-2.0 82 18 3 Updated Aug 2, 2025
  • 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 0 2 Updated Aug 1, 2025
  • killbill-gocardless-plugin Public

    GoCardless Payment Plugin (tutorial)

    killbill/killbill-gocardless-plugin’s past year of commit activity
    Java 4 5 0 1 Updated Aug 1, 2025
  • killbill-admin-ui Public

    Kill Bill Administrative UI engine

    killbill/killbill-admin-ui’s past year of commit activity
    Ruby 57 MIT 64 29 2 Updated Jul 31, 2025
  • killbill Public

    Open-Source Subscription Billing & Payments Platform

    killbill/killbill’s past year of commit activity
    Java 4,980 Apache-2.0 838 211 8 Updated Jul 29, 2025
  • killbill-analytics-ui Public

    Kill Bill UI for the Analytics plugin

    killbill/killbill-analytics-ui’s past year of commit activity
    Ruby 4 MIT 10 6 2 Updated Jul 25, 2025
  • killbill-adyen-plugin Public

    Kill Bill plugin for Adyen

    killbill/killbill-adyen-plugin’s past year of commit activity
    Java 10 Apache-2.0 32 11 2 Updated Jul 24, 2025
  • killbill-catalog-plugin-test Public

    Test plugin for the CatalogPluginApi

    killbill/killbill-catalog-plugin-test’s past year of commit activity
    Java 3 Apache-2.0 10 2 1 Updated Jul 25, 2025
  • killbill-deposit-plugin Public

    Batch deposit plugin for Kill Bill

    killbill/killbill-deposit-plugin’s past year of commit activity
    Java 1 Apache-2.0 4 1 1 Updated Jul 25, 2025

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