mIRC - mIRC: Internet Relay Chat client
Teleconsole - Teleconsole is a free service to share your terminal session with people you trust.
HexChat - HexChat is a fork of XChat with bug fixes and new features.
Shell Notebook - MacOS Terminal, reimagined
irssi - Irssi is a terminal based IRC client for UNIX systems.
TermHere - “Open Terminal Here” shortcut for Finder