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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 902

  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 41 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 95

Repositories

Showing 10 of 113 repositories
  • killbill-kpm-ui Public

    Kill Bill UI for the KPM plugin

    killbill/killbill-kpm-ui’s past year of commit activity
    Ruby 0 MIT 4 1 2 Updated Mar 15, 2026
  • killbill-admin-ui-standalone Public

    Kill Bill Administrative UI

    killbill/killbill-admin-ui-standalone’s past year of commit activity
    Ruby 21 25 2 1 Updated Mar 15, 2026
  • killbill-avatax-ui Public

    Kill Bill UI for the AvaTax plugin

    killbill/killbill-avatax-ui’s past year of commit activity
    Ruby 0 MIT 5 0 2 Updated Mar 15, 2026
  • killbill-admin-ui Public

    Kill Bill Administrative UI engine

    killbill/killbill-admin-ui’s past year of commit activity
    HTML 63 MIT 72 25 1 Updated Mar 14, 2026
  • killbill-docs Public

    Kill Bill documentation

    killbill/killbill-docs’s past year of commit activity
    CSS 41 Apache-2.0 88 18 3 Updated Mar 14, 2026
  • killbill-vertex-plugin Public

    Kill Bill tax plugin for Vertex

    killbill/killbill-vertex-plugin’s past year of commit activity
    Java 1 Apache-2.0 6 1 4 Updated Mar 13, 2026
  • killbill/killbill-braintree’s past year of commit activity
    Java 3 2 0 3 Updated Mar 13, 2026
  • killbill-deposit-ui Public

    Kill Bill UI for the deposit plugin

    killbill/killbill-deposit-ui’s past year of commit activity
    Ruby 0 MIT 5 2 2 Updated Mar 11, 2026
  • killbill-payment-test-ui Public

    KAUI mountable rails engine to manage the killbill_payment_test plugin

    killbill/killbill-payment-test-ui’s past year of commit activity
    Ruby 0 MIT 2 1 1 Updated Mar 11, 2026
  • killbill Public

    Open-Source Subscription Billing & Payments Platform

    killbill/killbill’s past year of commit activity
    Java 5,381 Apache-2.0 902 224 13 Updated Mar 11, 2026

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