NiMC provides an Instant Messaging server and client that runs on a custom protocol that is implemented in python. The project was written as a learning experiment by its author, to get experience with TCP/IP. Great example of how to do TCP/IP wrong
This software is input tool of soliloquy log via IRC-like interface. Each message has datetime information. And a log file are always saved and the usability of the sticky-like.
Concurrence is a networked file editing program that enables multiple people to modify a document simultaneously. It is written entirely in Python, and uses the wxPython library for the GUI and the Twisted library for networking.