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Gunicorn

Python WSGI HTTP server for UNIX

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Gunicorn is an HTTP server for running Python applications on UNIX systems. It uses a pre-fork worker model to handle incoming requests and serves applications built with WSGI or ASGI frameworks, including Django, Flask, FastAPI, Pyramid, Starlette, Falcon, Bottle, and Quart, without requiring changes to the application code. It is installed via pip and started with a single command.

Gunicorn offers several worker types: sync as the default, async workers based on Gevent or Eventlet for I/O-bound workloads, thread-based workers, and native asyncio support for ASGI frameworks. Documentation covers quickstart, deployment with Nginx, systemd, and Docker, configuration settings, and a control interface. The project is open source, with community channels for issues and discussion, and a sponsorship program to support continued development.

12 alternatives to Gunicorn

Ranked by how well each tool replaces Gunicorn: shared features, audience, price and popularity.

  1. Phusion Passenger

    An app server that runs and manages web applications, integrating with Apache and Nginx

    Covers 6 of 15 key features and has a free plan.

    Free planOpen source
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  2. PythonAnywhere

    Cloud platform for running Python code and hosting Python web applications from the web.

    Covers 3 of 15 key features and has a free plan.

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  3. Twisted

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    Covers 6 of 15 key features.

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    56 out of 100 match—

  4. Pyramid

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    Covers 8 of 15 key features.

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    56 out of 100 match—

  5. Pterodactyl

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    Covers 5 of 15 key features and has a free plan.

    Free planOpen source
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  6. Centmin Mod

    High-Performance LEMP Stack. Effortlessly Managed.

    Covers 8 of 15 key features and has a free plan.

    Free planOpen source
    56 out of 100 matchContact sales

  7. Abyss Web Server

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    Covers 6 of 15 key features and has a free plan.

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  8. Coolify

    Self-hosting platform for deploying apps, databases and services to your own servers.

    Covers 6 of 15 key features and has a free plan.

    Free planOpen source
    54 out of 100 match$5/mo

  9. Napkin

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    Covers 7 of 15 key features and has a free plan.

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  10. Bottle

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    Covers 0 of 15 key features.

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  11. PageKite

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    Covers 4 of 15 key features and has a free plan.

    Free planOpen source
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  12. Caddy

    The Ultimate Server with Automatic HTTPS

    Covers 2 of 15 key features and has a free plan.

    Free planOpen source
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