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The uWSGI project

The uWSGI project aims at developing a full stack for building hosting services.

Application servers (for various programming languages and protocols), proxies, process managers and monitors are all implemented using a common api and a common configuration style.

Thanks to its pluggable architecture it can be extended to support more platforms and languages.

Currently, you can write plugins in C, C++ and Objective-C.

The "WSGI" part in the name is a tribute to the namesake Python standard, as it has been the first developed plugin for the project.

Versatility, performance, low-resource usage and reliability are the strengths of the project (and the only rules followed).

Included components (updated to latest stable release)

The Core (implements configuration, processes management, sockets creation, monitoring, logging, shared memory areas, ipc, cluster membership and the :doc:`SubscriptionServer`)

Request plugins (implement application server interfaces for various languages and platforms: WSGI, PSGI, Rack, Lua WSAPI, CGI, PHP, Go ...)

Gateways (implement load balancers, proxies and routers)

The :doc:`Emperor <Emperor>` (implements massive instances management and monitoring)

Loop engines (implement events and concurrency, components can be run in preforking, threaded, asynchronous/evented and green thread/coroutine modes. Various technologies are supported, including uGreen, Greenlet, Stackless, :doc:`Gevent <Gevent>`, Coro::AnyEvent, :doc:`Tornado <Tornado>`, Goroutines and Fibers)


uWSGI is a very active project with a fast release cycle. For this reason the code and the documentation may not always be in sync. We try to make our best to have good documentation but it is a hard work. Sorry for that. If you are in trouble, the mailing list is the best source for help regarding uWSGI. Contributors for documentation (in addition to code) are always welcome.


Table of Contents



uWSGI Subsystems

Scaling with uWSGI

Securing uWSGI

Keeping an eye on your apps

Async and loop engines

Web Server support

Language support

Other plugins

Broken/deprecated features

Release Notes

Stable releases


Mailing list
Gmane mirror
IRC #uwsgi @ The owner of the channel is unbit.
Commercial support


Commercial support

You can buy commercial support from


uWSGI development is sponsored by the Italian ISP Unbit and its customers. You can buy commercial support and licensing. If you are not an Unbit customer, or you cannot/do not want to buy a commercial uWSGI license, consider making a donation. Obviously please feel free to ask for new features in your donation.

We will give credit to everyone who wants to sponsor new features.

Check for the donation link. You can also donate via GitTip.

Indices and tables