Gunicorn (HTTP server)

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Green Uniccorn logo.jpg
Original author(s) Benoit Chesneau
Developer(s) Gunicorn Developers
Initial release 20 February 2010; 6 years ago (2010-02-20)
Stable release 19.3 / March 6, 2015; 16 months ago (2015-03-06)[1]
Development status Active
Written in Python
Operating system Cross-platform
Available in English
Type Web server
License MIT License

The Gunicorn "Green Unicorn" is a Python Web Server Gateway Interface (WSGI) HTTP server. It is a pre-fork worker model, ported from Ruby's Unicorn project. The Gunicorn server is broadly compatible with a number of web frameworks, simply implemented, light on server resources and fairly fast.[2]


  • Natively supports WSGI, web2py, Django and Paster
  • Automatic worker process management
  • Simple Python configuration
  • Multiple worker configurations
  • Various server hooks for extensibility
  • Compatible with Python 2.6+ and Python 3.2+[3]

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 This article incorporates text available under the CC BY 3.0 license.