Does anyone know of an open source twitter clone? Preferably in PHP or Python. Not a client mind you, but the server guts of receiving IMs and doing something with them, enabling followers, public viewing, etc. I want to implement this on an intranet inside a corp network and obviously not display our tweets for public consumption, but only internal consumption. If this doesn't exist, what do you all think is the easiest way to create this? An instance of jabber or something else?