gunicorn
WSGI HTTP Server for UNIX
Decision gist · record as of 2026-08-14
Yes. Gunicorn is the industry standard for Python web application deployment, actively maintained, permissively licensed, and has zero known vulnerabilities. Install it if you are deploying a WSGI or ASGI application to production on Unix. The only caveat is the Python 3.10+ requirement and Unix-only support—Windows users must use an alternative.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later; Unix-like operating system (Linux, macOS, BSD) required—not supported on Windows.
- Installation is straightforward with low friction—a single pure-Python wheel dependency on packaging.
- The project is actively maintained with recent commits and has been in production use since 2010, with a large community presence and no known vulnerabilities.
License · maintenance · safety
MIT (permissive) — MIT license is permissive, allowing use in commercial and proprietary projects with minimal restrictions—you may use, modify, and distribute Gunicorn freely provided you include the license notice.
last release 2026-05-05 (101 days) · last repo commit 2026-08-01 · 10,644 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 136,458,659 downloads/mo, #281 on PyPI
Alternatives
Verify before relying
pip install gunicorn
gunicorn myapp:app --workers 4
# For ASGI apps (FastAPI, Starlette):
gunicorn myapp:app --worker-class asgi- Specific performance characteristics (requests/sec, latency) under typical workloads.
- Details on HTTP/2 beta support stability and production readiness.
- Dirty Arbiters feature maturity and use-case suitability for ML workloads.
What it is and what it does
Gunicorn is a production-grade HTTP application server that runs Python web applications on Unix systems. It implements a pre-fork worker model—spawning multiple worker processes to handle concurrent requests—and supports both WSGI applications (Django, Flask, Pyramid) and ASGI applications (FastAPI, Starlette, Quart). The server is lightweight, resource-efficient, and designed for straightforward deployment behind a reverse proxy like nginx.
You install it, point it at your application entry point, and specify the number of workers and worker type (sync, threaded, gevent, or ASGI). Gunicorn handles graceful process management, worker recycling, and socket binding. It has been the de facto standard for Python web deployment since 2010 and remains actively maintained by volunteers.
Use it for
- Deploy Django or Flask applications to production with multiple worker processes for concurrent request handling.
- Run FastAPI or Starlette ASGI applications using the asgi worker class for async request handling.
- Serve Python web applications behind nginx or another reverse proxy in containerized or traditional server environments.
- Scale workloads by adjusting worker count and type (sync, threaded, gevent) based on application characteristics.
- Integrate with process managers (systemd, supervisor) for automatic restart and monitoring of application servers.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
Gunicorn is the industry standard for Python web application deployment, actively maintained, permissively licensed, and has zero known vulnerabilities. Install it if you are deploying a WSGI or ASGI application to production on Unix. The only caveat is the Python 3.10+ requirement and Unix-only support—Windows users must use an alternative.
Install
gunicorn on PyPI
Before you install
Installation is straightforward with low friction—a single pure-Python wheel dependency on packaging. The project is actively maintained with recent commits and has been in production use since 2010, with a large community presence and no known vulnerabilities.
Requires Python 3.10 or later; Unix-like operating system (Linux, macOS, BSD) required—not supported on Windows.
License in practice
MIT license is permissive, allowing use in commercial and proprietary projects with minimal restrictions—you may use, modify, and distribute Gunicorn freely provided you include the license notice.
Quickstart
pip install gunicorn
gunicorn myapp:app --workers 4
# For ASGI apps (FastAPI, Starlette):
gunicorn myapp:app --worker-class asgiVerify before relying
- Specific performance characteristics (requests/sec, latency) under typical workloads.
- Details on HTTP/2 beta support stability and production readiness.
- Dirty Arbiters feature maturity and use-case suitability for ML workloads.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagepackaging |
| Maintenance | Actively maintained 101 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 136,458,659 / month, #281 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | 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 |
Evidence: gunicorn-26.0.0-py3-none-any.whl
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See also gunicorn_h1c · uvicorn-worker · pyuwsgi · Hypercorn · granian · servestatic · types-gunicorn · a2wsgi · wsgidav · uwsgitop