BitchX

bitchx.sourceforge.netsite

Terminal-based client popular on Unix-like systems. (screenshots) Linux macOS Windows

similar

bitchx bitchx.com
site category #terminals-are-sexy link ↗

Feature-rich and highly configurable, terminal based IRC client based on ircII.
sic tools.suckless.org
site category #irc link ↗

Simple IRC client - a terminal client in less than 250 lines of C. Linux macOS
XChat xchat.org
site category #irc link ↗

Precursor to HexChat, multi-platform graphical IRC client. Windows Linux
HexChat hexchat.github.io
site category #irc link ↗

Based on XChat, easy to use, spell check & multiple languages. (source) Windows macOS Linux
Terminus github.com
tool category #terminals-are-sexy link ↗

Cross-platform terminal for a more modern age, based on web technologies.
kitty github.com
tool category #mac link ↗

A cross-platform, fast, feature full, GPU based terminal emulator.

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