[swanson]

Correct me if I am wrong, but isn't this just websockets, not the whole of Socket.IO (i.e. fallbacks for non-supporting browsers)?

There is also: http://github.com/SocketTornadIO/SocketTornad.IO which is a port of Socket.IO that runs on Tornado.

[denik]

Indeed, sorry. Here's the correct link: http://bitbucket.org/Jeffrey/gevent-socketio (by the same guy)