ICQ is a popular interactive internet chat protocol - see http://www.icq.com/ for more details..
From http://www.purl.org/NET/Tcl-FAQ/part4.html , one can see at least the following Tcl programs relating to ICQ:
What: Alicq
Where: http://alicq.sourceforge.net/
On Freshmeat: http://freshmeat.net/projects/alicq/
Description: Tcl/Tk based ICQ client, support for ICQ 2000/Oscar protocol, and ability to use Licq config files and user database.
Currently at version 0.8.9.
Updated: 14-Oct-2004
Contact: See web site
What: MIKU
Where: http://mailmiku.chat.ru/
Description: Send ICQ like messages using ordinary mail accounts. Written using Tcl/Tk.
Currently at version 1.0 .
Updated: 07/2000
Contact: mailto:[email protected]
What: Tcllian
Where: http://www.panoptic.com/tcllian/
Description: A Tcl plugin for the instant messenger trillian pro.
Updated: 28/02/2006
Contact: mailto: [email protected]