gunicorn

WSGI HTTP Server for UNIX

gunicorn Permissive license MIT Active ★ 10,645 v26.0.0 released 2026-05-05

Install

gunicorn on PyPI

pip

pip install gunicorn

uv

uv add gunicorn

poetry

poetry add gunicorn

Package facts

License	MIT (permissive)
Python support	supports the current Python release (>=3.10)
Install friction	low — pure-Python wheel
Runtime dependencies	1 — packaging
Maintenance	actively maintained — 100 days since the last release
Last repo commit	2026-08-01
First released	2010-01-03
Popularity	one of the top 1,000 most-downloaded packages on PyPI (30-day window, as of 2026-08-13)
Known vulnerabilities	none known (OSV.dev, checked 2026-08-13)

Evidence: gunicorn-26.0.0-py3-none-any.whl

Development Status :: 5 - Production/StableEnvironment :: Other EnvironmentIntended Audience :: DevelopersOperating System :: MacOS :: MacOS XOperating System :: POSIXProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: Implementation :: CPythonProgramming Language :: Python :: Implementation :: PyPyTopic :: InternetTopic :: Internet :: WWW/HTTPTopic :: Internet :: WWW/HTTP :: Dynamic ContentTopic :: Internet :: WWW/HTTP :: WSGITopic :: Internet :: WWW/HTTP :: WSGI :: ServerTopic :: Software Development :: Libraries :: Python ModulesTopic :: Utilities

About gunicorn

from the package's own PyPI description — quoted content, verbatim

Gunicorn

Gunicorn is maintained by volunteers. If it powers your production, please consider supporting us: <a href="https://github.com/sponsors/benoitc"><img src="https://img.shields.io/badge/GitHub_Sponsors-❤-ea4aaa?style=for-the-badge&logo=github" alt="GitHub Sponsors"></a> <a href="https://checkout.revolut.com/pay/ac271e5e-172a-408b-947b-2f9f79d3a88a"><img src="https://img.shields.io/badge/Revolut-Donate-191c20?style=for-the-badge" alt="Revolut"></a>

PyPI version (image) Supported Python versions (image) Build Status (image)

Gunicorn 'Green Unicorn' is a Python WSGI HTTP Server for UNIX. It's a pre-fork worker model ported from Ruby's Unicorn project. The Gunicorn server is broadly compatible with various web frameworks, simply implemented, light on server resource usage, and...

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AI interpretation — verify before relying

AI-generated interpretation of the package facts above; every digit, version, license, or vulnerability id it cites is grounded in the facts already shown on this page

Gunicorn is a production-grade WSGI/ASGI HTTP server for Python web applications, supporting Django, Flask, FastAPI, and other frameworks with multiple worker types and graceful process management.

Low friction: pure Python wheel with only packaging as a runtime dependency. Actively maintained with recent commits and strong community adoption; last release 100 days ago. Supports Python 3.10–3.13.

MIT license (permissive) places no restrictions on commercial or proprietary use; you may use, modify, and distribute gunicorn freely with minimal attribution requirements.

Usage

pip install gunicorn
gunicorn myapp:app --workers 4

# For ASGI apps (FastAPI, Starlette):
gunicorn myapp:app --worker-class asgi

Requires Python 3.10 or later; UNIX-like operating system (macOS, Linux, BSD) — not supported on Windows.

Verdict: Gunicorn is a mature, well-maintained production server with zero known vulnerabilities, permissive MIT license, and minimal dependencies. Active maintenance status and broad framework support make it a safe, low-friction choice for deploying Python web applications.

Needs verification

Community adoption scale and deployment prevalence across production environments.
Performance characteristics and resource overhead compared to alternative ASGI servers under typical loads.
HTTP/2 support stability status and any known limitations beyond the 'beta' designation.

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