Developping concurrent applications in Python Since 2 years or so, I work on [Gunicorn](http://gunicorn.org). This talk will present how I and the others core developers (we are now 3) with the help of the community have from a simple wsgi server with one command built a powerful WSGI abble to run a wide range of Python web applications. This talk will cover the different paths choosen in gunicorn to handle synchronous and asynchronous applications, how we handle different web frameworks, how we have made gunicorn fully extendable using the Python packaging system, what we learn from the community in application serving and how you can solve some problems. It will also present how the gunicorn core has been used to build frameworks that can help your application to be more scalable: [pistil](https://github.com/benoitc/pistil) a simple multiprocessing toolkit, [flower](https://github.com/benoitc/flower) a collection of modules to build distributed and reliable concurrent systems in Python, ...