(Note: Recent versions of Channels also need recent versions of Daphne, asgi_redis and asgiref, so make sure you update all at once)
This is a work-in-progress code branch of Django implemented as a third-party app, which aims to bring some asynchrony to Django and expand the options for code beyond the request-response model, in particular enabling WebSocket, HTTP2 push, and background task support.
This is still beta software: the API is mostly settled, but might change a bit as things develop.
Documentation, installation and getting started instructions are at http://channels.readthedocs.org
Support can be obtained either here via issues, or in the #django-channels channel on Freenode.
You can also install channels from PyPI as the channels package. You'll likely also want asgi_redis to provide the Redis channel layer.