Gunicorn
gunicorn.org
Spec sheet
- Purpose
- Gunicorn is a Python WSGI HTTP server for running Python web applications.Read 4 Oct 2026 · gunicorn.org
- Support
- The project provides GitHub issues and discussions plus a Libera.Chat channel, and notes that chat has no guaranteed watcher.Read 4 Oct 2026 · gunicorn.org
- Founded
- 2010Read 28 Sep 2026 · gunicorn.org
- ASGI features
- The native ASGI worker supports HTTP/1.1, HTTP/2 with SSL, WebSockets, lifespan hooks, SSL/TLS, and the uWSGI protocol.Read 4 Oct 2026 · gunicorn.org
- Deployment integrations
- The deployment guide recommends running Gunicorn behind a proxy and includes Nginx configuration as well as examples for HAProxy, stunnel, and AWS load balancers.Read 4 Oct 2026 · gunicorn.org
- Frameworks
- The site lists Django, Flask, FastAPI, Pyramid, Starlette, Falcon, Bottle, and Quart as compatible frameworks.Read 4 Oct 2026 · gunicorn.org
- Installation
- The installation guide lists pip, pipx, Docker, and system packages for Debian/Ubuntu, Fedora, and Arch Linux.Read 4 Oct 2026 · gunicorn.org
- Monitoring
- Optional statsD instrumentation over UDP reports request rates, request duration, worker counts, and log event rates.Read 4 Oct 2026 · gunicorn.org
- Paid support
- The project offers sponsored support contracts for priority bug fixes and feature requests.Read 4 Oct 2026 · gunicorn.org
- Project history
- The support page says Gunicorn has served Python web applications since 2010 and is downloaded millions of times per month.Read 4 Oct 2026 · gunicorn.org
- Python requirement
- The installation guide says Gunicorn requires Python 3.12 or newer.Read 4 Oct 2026 · gunicorn.org
- Security guidance
- The deployment guide warns that default synchronous workers can be vulnerable to denial-of-service attacks unless the proxy buffers slow clients.Read 4 Oct 2026 · gunicorn.org
- Security reporting
- The community page asks users to report security vulnerabilities privately to [email protected]; only core developers subscribe to that list.Read 4 Oct 2026 · gunicorn.org
- Worker model
- Its pre-fork worker model is described as handling traffic spikes gracefully.Read 4 Oct 2026 · gunicorn.org
- Worker types
- The site describes sync, gevent/eventlet async, threaded, and native ASGI worker options.Read 4 Oct 2026 · gunicorn.org
Plans and prices
Gunicorn Free Open-source Python WSGI/ASGI server · sponsorship and sponsored support contracts are optional Read 4 Oct 2026 · gunicorn.org
Where Specifiction places it
- Application Servers#5 of 288.0
- Web Server Software#7 of 368.1
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