HexChat - HexChat is a fork of XChat with bug fixes and new features.
fzf - A command-line fuzzy finder written in Go
irssi - Irssi is a terminal based IRC client for UNIX systems.
fzy - A better fuzzy finder
Kiwi IRC - A hand-crafted IRC client that you can enjoy. Designed to be used easily and freely.
skim (fuzzy finder) - Discover open source libraries, modules and frameworks you can use in your code