Hi, I found the following at http://twistedmatrix.com/documents/howto/choosing-reactor#auto16: ----- Tkinter The support for Tkinter doesn't use a specialized reactor. Instead, there is some specialized support code: from Tkinter import * from twisted.internet import tksupport root = Tk() root.withdraw() # Install the Reactor support tksupport.install(root) An example Twisted application that uses Tk can be found in twisted/words/ui/tkim.py. ----- But I didn't find it in either the twisted or TwistedDocs directories in my Python 2.3 site-packages directory. The copyright,.py on my twisted installation shows twisted version 1.1.0. I also had a look at the examples index in http://twistedmatrix.com/documents/examples/#auto8 and found links to uses of qt, wx, gtk2 and curses, but nothing about Tkinter. Having loaded up on Tkinter books on the strength of the assertion that Tkinter is the standard, most cross-platform GUI for Python, I'm understandably anxious to use it with twisted. I'm writing a socket server that needs to both respond to incoming client requests and occasionally send unsolicited messages to the client based on Tkinter button presses and timer expirations. I was originally going use some lower-level Python modules, but I was intrigued by the stylistic and software engineering claims of twisted, especially the use of aspect-oriented programming as a tool for managing unrelated complexities, so I'm going to try to dive into twisted a little deeper before giving up and heading back to the shallow end of the pool. Thanks in advance for any information that will help me integrate Tkinter with twisted. P.S. I found the itamarst.org tutorials (formidavel!) and am working my way through them.