Windows installer: Download 
Python source: github (recommended) or ZIP/TAR
When using the source code, Python 2.5 or higher is required, along with the Twisted framework.
Download P2PChan
Latest Release: 24 December 2009
Windows download: binary installer
All other platforms: github page
Want to contribute?
At this time, the easiest way to help out is to leave your copy of P2PChan running. This will help make sure that several copies of all posts made will be kept for other users to see.
By leaving your copy of P2PChan running, you also help with allowing more peers to join the network in case they can not reach other peers.
If you'd like to run P2PChan but don't want to run the web server that comes with it, just create a blank file named nodemode in the P2PChan directory.
Running in node mode does not require the installation of the Twisted framework if you are running from the Python source code.