mIRC - mIRC: Internet Relay Chat client
CSE Classroom Manager - Technology for Education
HexChat - HexChat is a fork of XChat with bug fixes and new features.
NetSupport School - NetSupport School supports a teacher with a wealth of dedicated assessment, monitoring, collaboration and control features.
irssi - Irssi is a terminal based IRC client for UNIX systems.
Class Charts - Class Charts is super fast behaviour management software, creating school seating plans in seconds.