XiRCON

XiRCON is a Tcl-scripted IRC client for Microsoft Windows. It was developed by Mark Hanson, a software developer, and considered at one time a strong rival to mIRC. Development ceased in 1997 upon release of version 1.0 Beta 4. Despite this, XiRCON fielded a steadily growing community based around the popular Kano script, among others. As mIRC progressed it started to include XiRCON features such as multi-server support and visual themes. XiRCON's remaining userbase began to dwindle as mIRC became more stable and popular scripts comparable to Kano were released. A very small community still keeps the program alive via moderating the official IRC channel, [irc://irc.he.net/#XiRCON #XiRCON] on EFnet.
An attempt was made to clone XiRCON by David Gravereaux, who was also the author of the Falcon extension for XiRCON, but has yet to complete it. David also made a hack for XiRCON that allowed it to use any Tcl core v8.1 or higher.