---
id: billiard
version: "4.2.4"
license: BSD
license_treatment: permissive
maintenance: active
---

# billiard — Python multiprocessing fork with improvements and bugfixes

License: permissive · Maintenance: active · Popularity: top 1,000 on PyPI

## Install

pip install billiard
uv add billiard
poetry add billiard

## Description

========
billiard
========

|build-status-lin| |build-status-win| |license| |wheel| |pyversion| |pyimp|

:Version: 4.2.4
:Web: https://billiard.readthedocs.io
:Download: https://pypi.org/project/billiard/
:Source: https://github.com/celery/billiard/
:DeepWiki: |deepwiki|

.. |build-status-lin| image:: https://github.com/celery/billiard/actions/workflows/ci.yaml/badge.svg
    :alt: Build status on Linux
    :target: https://github.com/celery/billiard/actions/workflows/ci.yaml

.. |build-status-win| image:: https://ci.appveyor.com/api/projects/status/github/celery/billiard?png=true&branch=main
    :alt: Build status on Windows
    :target: https://ci.appveyor.com/project/ask/billiard

.. |license| image:: https://img.shields.io/pypi/l/billiard.svg
    :alt: BSD License
    :target: https://opensource.org/licenses/BSD-3-Clause

.. |wheel| image:: https://img.shields.io/pypi/wheel/billiard.svg
    :alt: Billiard can be installed via wheel
    :target: https://pypi.org/project/billiard/

.. |pyversion| image:: https://img.shields.io/pypi/pyversions/billiard.svg
    :alt: Supported Python versions.
    :target: https://pypi.org/project/billiard/

.. |pyimp| image::...

## AI interpretation — verify before relying

billiard is a maintained fork of Python's multiprocessing module that provides enhanced process pool management, bug fixes, and improvements for distributed computing tasks.

Verdict: billiard is a stable, actively maintained multiprocessing enhancement used by Celery and the broader distributed-computing ecosystem. Zero known vulnerabilities, permissive BSD license, no dependencies, and broad Python version support make it a low-risk choice for process pool workloads.

[View on SkillFed](https://skillfed.io/packages/billiard) · [View on PyPI](https://pypi.org/project/billiard/)